Safety recommendations, recipients, status, and linked accident/report context.
What Is This Collection?
When an NTSB investigation exposes a fixable problem, the Board issues formal safety recommendations to the FAA, manufacturers, and operators. These records track each recommendation, who received it, and how they responded. Many of the rules you train under started here.
Feb 17, 2026
From the Document
This report discusses the January 29, 2025, midair collision involving a Sikorsky UH-60L helicopter, operated by the US Army under the callsign PAT25, and a Mitsubishi Heavy Industries RJ Aviation (formerly Bombardier) CL-600-2C10 (CRJ700) airplane, N709PS, operated by PSA Airlines as flight 5342, over the Potomac River in southwest Washington, DC, about 0.5 miles southeast of Ronald Reagan Washington National Airport (DCA), Arlington, Virginia.…
Requested Action: TO THE UNITED STATES DEPARTMENT OF TRANSPORTATION: Require the Federal Aviation Administration to demonstrate at least annually that each air traffic control facility it operates has the routine capability to accomplish required postaccident and postincident drug and alcohol testing within the US Department of Transportation’s specified timeframes of 2 hours for alcohol and 4 hours for drugs, and implement a process to ensure that any facility…
Study Focus: Review traffic awareness and collision avoidance.
Response Status: Open - Acceptable Response
Recipient: DOT
Feb 17, 2026
From the Document
This report discusses the January 29, 2025, midair collision involving a Sikorsky UH-60L helicopter, operated by the US Army under the callsign PAT25, and a Mitsubishi Heavy Industries RJ Aviation (formerly Bombardier) CL-600-2C10 (CRJ700) airplane, N709PS, operated by PSA Airlines as flight 5342, over the Potomac River in southwest Washington, DC, about 0.5 miles southeast of Ronald Reagan Washington National Airport (DCA), Arlington, Virginia.…
Requested Action: TO THE UNITED STATES DEPARTMENT OF TRANSPORTATION: Work with the Federal Aviation Administration (FAA) Administrator to convene an independent panel to conduct a comprehensive review of the safety culture within the FAA’s Air Traffic Organization (ATO), and use the findings to enhance the ATO’s existing safety management system and integrate it into all levels of the organization.
Study Focus: Review traffic awareness and collision avoidance.
Response Status: Open - Acceptable Response
Recipient: DOT
Oct 29, 2025
From the Document
The National Transportation Safety Board (NTSB) is providing the following information to urge the Federal Aviation Administration (FAA) to immediately act on the safety recommendations in this report concerning the potential for incorrectly attached main landing gear on certain Learjet airplanes to separate from the wing structure during landing. We identified this issue during our ongoing investigation of a fatal runway excursion involving a…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Require, as a condition of continued airworthiness, operators and owners of applicable Learjet models to comply with Bombardier Service Bulletins (SBs) A23/24/25-32-20, A28/29 32 21, A31-32-25, A35/36-32-29, A55-32-26, and A60 32 42. (Urgent)
Study Focus: Review surface awareness and decisions during taxi, takeoff and landing.
Response Status: Open - Initial Response Received
Recipient: FAA
Oct 29, 2025
From the Document
The National Transportation Safety Board (NTSB) is providing the following information to urge the Federal Aviation Administration (FAA) to immediately act on the safety recommendations in this report concerning the potential for incorrectly attached main landing gear on certain Learjet airplanes to separate from the wing structure during landing. We identified this issue during our ongoing investigation of a fatal runway excursion involving a…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Require Bombardier to revise the maintenance procedures for the applicable Learjet models to include a check of the position of the aft landing gear trunnion pin and retaining bolt, following maintenance on the gear that requires removal of the aft trunnion, to ensure that the landing gear has been correctly attached to the airplane wing structure.
Study Focus: Review surface awareness and decisions during taxi, takeoff and landing.
Response Status: Open - Initial Response Received
Recipient: FAA
Jul 10, 2025
From the Document
This report discusses the January 5, 2024, accident involving a Boeing 737 9 airplane operated by Alaska Airlines that experienced an in-flight separation of the left mid exit door (MED) plug and rapid depressurization during climb after takeoff from Portland International Airport. One flight attendant and 7 passengers received minor injuries; the captain, the first officer, 3 flight attendants, and 164 passengers were uninjured; and the…
Requested Action: TO THE BOEING COMPANY: Continue the certification process for the design enhancement for mid exit door plugs to ensure that, once the design enhancement is certified, all applicable newly manufactured airplanes are equipped with the enhancement.
Study Focus: Review qualification and recent-experience requirements.
Response Status: Open - Initial Response Received
Recipient: Boeing Company
Jul 10, 2025
From the Document
This report discusses the January 5, 2024, accident involving a Boeing 737 9 airplane operated by Alaska Airlines that experienced an in-flight separation of the left mid exit door (MED) plug and rapid depressurization during climb after takeoff from Portland International Airport. One flight attendant and 7 passengers received minor injuries; the captain, the first officer, 3 flight attendants, and 164 passengers were uninjured; and the…
Requested Action: TO THE BOEING COMPANY: Once the design enhancement for mid exit door (MED) plugs is certified, issue a service bulletin to address retrofitting in-service MED plug equipped airplanes with the design enhancement.
Study Focus: Review traffic awareness and collision avoidance.
Response Status: Open - Initial Response Received
Recipient: Boeing Company
Jul 10, 2025
From the Document
This report discusses the January 5, 2024, accident involving a Boeing 737 9 airplane operated by Alaska Airlines that experienced an in-flight separation of the left mid exit door (MED) plug and rapid depressurization during climb after takeoff from Portland International Airport. One flight attendant and 7 passengers received minor injuries; the captain, the first officer, 3 flight attendants, and 164 passengers were uninjured; and the…
Requested Action: TO THE BOEING COMPANY: Apply your updated safety risk management process to current and future revisions to Business Process Instruction “Perform Part or Assembly Removal” to ensure that it provides clear and concise guidance for determining when a removal record is needed.
Study Focus: Review traffic awareness and collision avoidance.
Response Status: Open - Initial Response Received
Recipient: Boeing Company
Jul 10, 2025
From the Document
This report discusses the January 5, 2024, accident involving a Boeing 737 9 airplane operated by Alaska Airlines that experienced an in-flight separation of the left mid exit door (MED) plug and rapid depressurization during climb after takeoff from Portland International Airport. One flight attendant and 7 passengers received minor injuries; the captain, the first officer, 3 flight attendants, and 164 passengers were uninjured; and the…
Requested Action: TO THE BOEING COMPANY: Develop recurrent training on Business Process Instruction “Perform Part or Assembly Removal” for Boeing manufacturing personnel that emphasizes the importance of removal records for product safety, prepares personnel to consistently and correctly determine when a removal record is needed, and ensures that a removal record is generated when required.
Study Focus: Review traffic awareness and collision avoidance.
Response Status: Open - Initial Response Received
Recipient: Boeing Company
Jul 10, 2025
From the Document
This report discusses the January 5, 2024, accident involving a Boeing 737 9 airplane operated by Alaska Airlines that experienced an in-flight separation of the left mid exit door (MED) plug and rapid depressurization during climb after takeoff from Portland International Airport. One flight attendant and 7 passengers received minor injuries; the captain, the first officer, 3 flight attendants, and 164 passengers were uninjured; and the…
Requested Action: TO BOEING COMPANY: Develop a structured on-the-job training program that identifies and defines tasks necessary for manufacturing personnel to be considered fully qualified in their job series and includes a grading system for trainers and trainees to track progress and determine competence.
Study Focus: Review traffic awareness and collision avoidance.
Response Status: Open - Initial Response Received
Recipient: Boeing Company
Jul 10, 2025
From the Document
This report discusses the January 5, 2024, accident involving a Boeing 737 9 airplane operated by Alaska Airlines that experienced an in-flight separation of the left mid exit door (MED) plug and rapid depressurization during climb after takeoff from Portland International Airport. One flight attendant and 7 passengers received minor injuries; the captain, the first officer, 3 flight attendants, and 164 passengers were uninjured; and the…
Requested Action: TO THE BOEING COMPANY: Document and archive the results of training provided and received as part of the program recommended in Safety Recommendation A 25-30 to support future data analysis.
Study Focus: Review traffic awareness and collision avoidance.
Response Status: Open - Initial Response Received
Recipient: Boeing Company
Jul 10, 2025
From the Document
This report discusses the January 5, 2024, accident involving a Boeing 737 9 airplane operated by Alaska Airlines that experienced an in-flight separation of the left mid exit door (MED) plug and rapid depressurization during climb after takeoff from Portland International Airport. One flight attendant and 7 passengers received minor injuries; the captain, the first officer, 3 flight attendants, and 164 passengers were uninjured; and the…
Requested Action: TO THE BOEING COMPANY: Revise your safety risk management process to ensure that it 1) identifies the root causes of manufacturing process compliance issues, like the persistent deficiencies with Business Process Instruction “Perform Part or Assembly Removal” and other production process inconsistencies identified in this investigation, and 2) evaluates the effectiveness of corrective actions.
Study Focus: Review traffic awareness and collision avoidance.
Response Status: Open - Initial Response Received
Recipient: Boeing Company
Jul 10, 2025
From the Document
This report discusses the January 5, 2024, accident involving a Boeing 737 9 airplane operated by Alaska Airlines that experienced an in-flight separation of the left mid exit door (MED) plug and rapid depressurization during climb after takeoff from Portland International Airport. One flight attendant and 7 passengers received minor injuries; the captain, the first officer, 3 flight attendants, and 164 passengers were uninjured; and the…
Requested Action: TO THE BOEING COMPANY: As you integrate your quality management system and safety management system, develop a process that can identify escapes that result from human error, assess them using a system specifically designed to identify factors that contribute to such errors, and implement effective mitigation strategies.
Study Focus: Review traffic awareness and collision avoidance.
Response Status: Open - Initial Response Received
Recipient: Boeing Company
Jun 18, 2025
From the Document
The National Transportation Safety Board (NTSB) is providing the following information to urge the Federal Aviation Administration (FAA), the European Union Aviation Safety Agency (EASA), the Civil Aviation Administration of China (CAAC), CFM International, and Boeing to take action on safety recommendations in this report. These recommendations address the potential for smoke to enter the cockpit or cabin after activation of the load reduction…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION, THE EUROPEAN UNION AVIATION SAFETY AGENCY, AND THE CIVIL AVIATION ADMINISTRATION OF CHINA: Work with CFM International, Airbus, and the Commercial Aircraft Corporation of China to determine if CFM International LEAP-1A or -1C engines are at risk of smoke in the cockpit or cabin as a result of load reduction device activation and require affected operators to incorporate any modification that results.
Response Status: Open - Initial Response Received
Recipient: FAA, European Aviation Safety Agency, Foreign, China, Civil Aviation Administration of China
Apr 3, 2025
From the Document
On October 4, 2023, about 2347 eastern daylight time, the flight crew of FedEx flight 1376, a Boeing 757-236, received an engine indication and crew alerting system message indicating a failure of the left hydraulic system shortly after takeoff from Chattanooga Metropolitan Airport-Lovell Field (CHA), Chattanooga, Tennessee. The flight crew turned the airplane back to CHA but was unable to lower the landing gear. After multiple attempts to…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Require all Boeing 757 operators to inspect the bannis latches on Boeing 757-200, -200CB, and -300 series airplane doors and, if necessary, modify or replace them so they comply with the correct configuration.
Study Focus: Review aircraft-system operation, limitations and failure awareness.
Response Status: Open - Initial Response Received
Recipient: FAA
Apr 3, 2025
From the Document
On October 4, 2023, about 2347 eastern daylight time, the flight crew of FedEx flight 1376, a Boeing 757-236, received an engine indication and crew alerting system message indicating a failure of the left hydraulic system shortly after takeoff from Chattanooga Metropolitan Airport-Lovell Field (CHA), Chattanooga, Tennessee. The flight crew turned the airplane back to CHA but was unable to lower the landing gear. After multiple attempts to…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Require all operators of Boeing 727 and 737 airplane models that use the same bannis latch design as Boeing 757 airplanes (757-200, -200CB, and 300 series) to inspect and, if necessary, modify or replace the bannis latches as advised in the Boeing service bulletin recommended in Safety Recommendation A-25-8.
Study Focus: Review aircraft-system operation, limitations and failure awareness.
Response Status: Open - Initial Response Received
Recipient: FAA
Apr 3, 2025
From the Document
On October 4, 2023, about 2347 eastern daylight time, the flight crew of FedEx flight 1376, a Boeing 757-236, received an engine indication and crew alerting system message indicating a failure of the left hydraulic system shortly after takeoff from Chattanooga Metropolitan Airport-Lovell Field (CHA), Chattanooga, Tennessee. The flight crew turned the airplane back to CHA but was unable to lower the landing gear. After multiple attempts to…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Require all Boeing 757 operators to update their Boeing 757 200, 200CB, and -300 series airplane aircraft maintenance manuals (AMM) in accordance with the revised Boeing AMM and illustrated parts catalogs.
Study Focus: Review aircraft-system operation, limitations and failure awareness.
Response Status: Open - Initial Response Received
Recipient: FAA
Apr 3, 2025
From the Document
On October 4, 2023, about 2347 eastern daylight time, the flight crew of FedEx flight 1376, a Boeing 757-236, received an engine indication and crew alerting system message indicating a failure of the left hydraulic system shortly after takeoff from Chattanooga Metropolitan Airport-Lovell Field (CHA), Chattanooga, Tennessee. The flight crew turned the airplane back to CHA but was unable to lower the landing gear. After multiple attempts to…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Require all operators of Boeing 727 and 737 airplane models that use the same bannis latch design as Boeing 757 airplanes (757-200, -200CB, and 300 series) to update their aircraft maintenance manuals (AMM) in accordance with the revised Boeing AMMs and illustrated parts catalogs recommended in Safety Recommendation A-25-9.
Study Focus: Review aircraft-system operation, limitations and failure awareness.
Response Status: Open - Initial Response Received
Recipient: FAA
Apr 3, 2025
From the Document
On October 4, 2023, about 2347 eastern daylight time, the flight crew of FedEx flight 1376, a Boeing 757-236, received an engine indication and crew alerting system message indicating a failure of the left hydraulic system shortly after takeoff from Chattanooga Metropolitan Airport-Lovell Field (CHA), Chattanooga, Tennessee. The flight crew turned the airplane back to CHA but was unable to lower the landing gear. After multiple attempts to…
Requested Action: TO BOEING: Once the Boeing 757 aircraft maintenance manual and illustrated parts catalog are updated to provide a consistent and accurate depiction of the bannis latch assembly, issue a service bulletin advising Boeing 757 operators to inspect and, if necessary, modify or replace the bannis latches on Boeing 757-200, -200CB, and -300 series airplane with the correct configuration.
Study Focus: Review aircraft-system operation, limitations and failure awareness.
Response Status: Open - Initial Response Received
Recipient: Boeing Company
Apr 3, 2025
From the Document
On October 4, 2023, about 2347 eastern daylight time, the flight crew of FedEx flight 1376, a Boeing 757-236, received an engine indication and crew alerting system message indicating a failure of the left hydraulic system shortly after takeoff from Chattanooga Metropolitan Airport-Lovell Field (CHA), Chattanooga, Tennessee. The flight crew turned the airplane back to CHA but was unable to lower the landing gear. After multiple attempts to…
Requested Action: TO BOEING: Issue a service bulletin advising operators of Boeing 727 and 737 airplanes that use the same bannis latch design as Boeing 757 airplanes (757 200, 200CB, and -300 series) to inspect those airplanes and, if necessary, modify or replace the bannis latches with the correct configuration.
Study Focus: Review aircraft-system operation, limitations and failure awareness.
Response Status: Open - Initial Response Received
Recipient: Boeing Company
Apr 3, 2025
From the Document
On October 4, 2023, about 2347 eastern daylight time, the flight crew of FedEx flight 1376, a Boeing 757-236, received an engine indication and crew alerting system message indicating a failure of the left hydraulic system shortly after takeoff from Chattanooga Metropolitan Airport-Lovell Field (CHA), Chattanooga, Tennessee. The flight crew turned the airplane back to CHA but was unable to lower the landing gear. After multiple attempts to…
Requested Action: TO BOEING: Review all pertinent aircraft maintenance manuals and illustrated parts catalogs for Boeing 727 and 737 model airplanes that use the same bannis latch design as Boeing 757 airplanes (757-200, -200CB, and -300 series) to ensure they consistently and accurately depict the correct configuration of the bannis latch assembly for those Boeing airplane models, revise these manuals as needed, and notify affected operators about the manual…
Study Focus: Review aircraft-system operation, limitations and failure awareness.
Response Status: Open - Initial Response Received
Recipient: Boeing Company
Mar 11, 2025
From the Document
The National Transportation Safety Board (NTSB) is providing the following information to urge the Federal Aviation Administration (FAA) to take immediate action on the safety recommendations in this report concerning the potential for midair collisions between traffic on helicopter Route 4 and airplanes landing on runway 33 or departing runway 15 at Ronald Reagan Washington National Airport (DCA). We identified these issues during our ongoing…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Designate an alternative helicopter route that can be used to facilitate travel between Hains Point and the Wilson Bridge when that segment of Route 4 is closed. (Urgent)
Study Focus: Review surface awareness and decisions during taxi, takeoff and landing.
Response Status: Closed - Acceptable Action
Recipient: FAA
Dec 12, 2024
From the Document
This report discusses the November 12, 2022, accident involving two historic, former military airplanes operated by the Commemorative Air Force (CAF) that collided in flight during a performance in the CAF’s Wings Over Dallas air show. The pilot, copilot, flight engineer, and two scanners on board the Boeing B-17G and the pilot of the Bell P-63F were fatally injured, and both airplanes were destroyed. No injuries to persons on the ground were…
Requested Action: TO THE INTERNATIONAL COUNCIL OF AIR SHOWS, INC.: In collaboration with the Federal Aviation Administration and other air show industry stakeholders develop standardized, unambiguous terms to help ensure that the directives that air bosses provide performers, such as those related to show lines, are clear and brief.
Response Status: Open - Acceptable Response
Recipient: International Council of Air Shows
Dec 12, 2024
From the Document
This report discusses the November 12, 2022, accident involving two historic, former military airplanes operated by the Commemorative Air Force (CAF) that collided in flight during a performance in the CAF’s Wings Over Dallas air show. The pilot, copilot, flight engineer, and two scanners on board the Boeing B-17G and the pilot of the Bell P-63F were fatally injured, and both airplanes were destroyed. No injuries to persons on the ground were…
Requested Action: TO THE INTERNATIONAL COUNCIL OF AIR SHOWS, INC.: In collaboration with the Federal Aviation Administration (FAA) and the warbird community establish standard operating procedures for air show event organizers and air bosses that include: 1) applying administrative controls to ensure that multiple, dissimilar aircraft not operated as part of an approved maneuvers package remain deconflicted; 2) performing a safety risk assessment for each…
Response Status: Open - Acceptable Response
Recipient: International Council of Air Shows
Sep 26, 2024
From the Document
The National Transportation Safety Board (NTSB) is providing the following information to urge The Boeing Company and the Federal Aviation Administration (FAA) to take immediate action on the safety recommendations in this report concerning the potential for a jammed or restricted rudder control system on certain Boeing 737 airplanes. We identified these issues during our ongoing investigation of the rudder pedal anomaly involving a Boeing…
Requested Action: TO THE BOEING COMPANY: Instruct operators of Boeing 737NG and 737MAX airplanes with Collins Aerospace SVO-730 rudder rollout guidance actuators with incorrectly assembled bearings to notify flight crews that the rudder control system might become jammed or restricted in flight or during landing due to moisture that could accumulate and freeze in the actuators. (Urgent)
Response Status: Open - Initial Response Received
Recipient: Boeing Company
Sep 26, 2024
From the Document
The National Transportation Safety Board (NTSB) is providing the following information to urge The Boeing Company and the Federal Aviation Administration (FAA) to take immediate action on the safety recommendations in this report concerning the potential for a jammed or restricted rudder control system on certain Boeing 737 airplanes. We identified these issues during our ongoing investigation of the rudder pedal anomaly involving a Boeing…
Requested Action: TO THE BOEING COMPANY: For 737NG and 737MAX airplanes with Collins Aerospace SVO-730 rudder rollout guidance actuators with incorrectly assembled bearings, determine appropriate flight crew responses, besides applying maximum rudder pedal force, if the condition described in Safety Recommendation A-24-27 were encountered in flight or during landing and then notify operators to disseminate this information to flight crews of these airplanes.…
Response Status: Open - Initial Response Received
Recipient: Boeing Company
Sep 26, 2024
From the Document
The National Transportation Safety Board (NTSB) is providing the following information to urge The Boeing Company and the Federal Aviation Administration (FAA) to take immediate action on the safety recommendations in this report concerning the potential for a jammed or restricted rudder control system on certain Boeing 737 airplanes. We identified these issues during our ongoing investigation of the rudder pedal anomaly involving a Boeing…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Determine whether Collins Aerospace SVO 730 rudder rollout guidance actuators with incorrectly assembled bearings should be removed from Boeing 737NG and 737MAX airplanes and, if so, direct US operators to remove the actuators until acceptable replacement actuators become available for installation. (Urgent)
Response Status: Open - Initial Response Received
Recipient: FAA
Sep 26, 2024
From the Document
The National Transportation Safety Board (NTSB) is providing the following information to urge The Boeing Company and the Federal Aviation Administration (FAA) to take immediate action on the safety recommendations in this report concerning the potential for a jammed or restricted rudder control system on certain Boeing 737 airplanes. We identified these issues during our ongoing investigation of the rudder pedal anomaly involving a Boeing…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: If you determine the Collins Aerospace SVO 730 rudder rollout guidance actuators with incorrectly assembled bearings should be removed, notify international regulators that oversee operators of Boeing 737 airplanes about the safety issues involving the SVO-730 rudder rollout guidance actuator and encourage them to require the removal of actuators with incorrectly assembled bearings from 737NG and 737MAX…
Response Status: Open - Initial Response Received
Recipient: FAA
Aug 27, 2024
From the Document
This report discusses the June 22, 2022, accident that occurred during an event at which attendees could pay to fly or ride in a former military turbine-powered UH-1B helicopter. About 15 minutes after the flight departed, the pilot attempted a forced landing, but the helicopter impacted two powerlines and a rock face about 3.5 nautical miles east of the airport. The helicopter came to rest partially inverted on its right side on an asphalt…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Review all experimental exhibition airworthiness certificates issued to turbine-powered rotorcraft and ensure that their operating limitations meet the standards of the latest iteration of Federal Aviation Administration Order 8130.2, Airworthiness Certification of Aircraft.
Study Focus: Review qualification and recent-experience requirements.
Response Status: Open - Acceptable Response
Recipient: FAA
Aug 27, 2024
From the Document
This report discusses the June 22, 2022, accident that occurred during an event at which attendees could pay to fly or ride in a former military turbine-powered UH-1B helicopter. About 15 minutes after the flight departed, the pilot attempted a forced landing, but the helicopter impacted two powerlines and a rock face about 3.5 nautical miles east of the airport. The helicopter came to rest partially inverted on its right side on an asphalt…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Establish periodic reviews for experimental exhibition airworthiness certificates to ensure that those aircraft are being inspected and maintained according to the latest iteration of Federal Aviation Administration Order 8130.2, Airworthiness Certification of Aircraft.
Study Focus: Review qualification and recent-experience requirements.
Response Status: Open - Acceptable Response
Recipient: FAA
Aug 27, 2024
From the Document
This report discusses the June 22, 2022, accident that occurred during an event at which attendees could pay to fly or ride in a former military turbine-powered UH-1B helicopter. About 15 minutes after the flight departed, the pilot attempted a forced landing, but the helicopter impacted two powerlines and a rock face about 3.5 nautical miles east of the airport. The helicopter came to rest partially inverted on its right side on an asphalt…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Require operators of aircraft equipped with Ozark Aeroworks T53 series engines to perform recurrent inspections of the rear bearing cover and the exhaust diffuser inner cone and inner struts with the exhaust diffuser cover removed.
Study Focus: Review preparation and response to abnormal or emergency situations.
Response Status: Open - Acceptable Response
Recipient: FAA
Aug 27, 2024
From the Document
This report discusses the June 22, 2022, accident that occurred during an event at which attendees could pay to fly or ride in a former military turbine-powered UH-1B helicopter. About 15 minutes after the flight departed, the pilot attempted a forced landing, but the helicopter impacted two powerlines and a rock face about 3.5 nautical miles east of the airport. The helicopter came to rest partially inverted on its right side on an asphalt…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Remind operators of experimental exhibition aircraft about the requirement to submit, to the appropriate flight standards district office, program letters that list all events at which the aircraft will be exhibited.
Study Focus: Review preparation and response to abnormal or emergency situations.
Response Status: Open - Acceptable Response
Recipient: FAA
Aug 27, 2024
From the Document
This report discusses the June 22, 2022, accident that occurred during an event at which attendees could pay to fly or ride in a former military turbine-powered UH-1B helicopter. About 15 minutes after the flight departed, the pilot attempted a forced landing, but the helicopter impacted two powerlines and a rock face about 3.5 nautical miles east of the airport. The helicopter came to rest partially inverted on its right side on an asphalt…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Develop a method for ensuring that operators of experimental exhibition aircraft meet their annual obligation to submit program letters; such a method could include potential penalties for operators that do not meet this obligation.
Study Focus: Review preparation and response to abnormal or emergency situations.
Response Status: Open - Acceptable Response
Recipient: FAA
Aug 27, 2024
From the Document
This report discusses the June 22, 2022, accident that occurred during an event at which attendees could pay to fly or ride in a former military turbine-powered UH-1B helicopter. About 15 minutes after the flight departed, the pilot attempted a forced landing, but the helicopter impacted two powerlines and a rock face about 3.5 nautical miles east of the airport. The helicopter came to rest partially inverted on its right side on an asphalt…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Revise Federal Aviation Administration Order 8900.1, Flight Standards Information Management System, to include inspector guidance requiring routine surveillance of operators of aircraft with experimental exhibition airworthiness certificates.
Study Focus: Review qualification and recent-experience requirements.
Response Status: Open - Acceptable Response
Recipient: FAA
Aug 9, 2024
From the Document
This report discusses the National Transportation Safety Board’s review of the investigation reports for the 116 fatal accidents and 460 nonfatal accidents involving flights operated under Title 14 Code of Federal Regulations Part 135 that occurred from 2010 to 2022. The safety issues identified in this report include operational control and flight-locating deficiencies that can be addressed by using certificated dispatchers; weight and balance…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Develop, validate, and implement a single, unbiased method for generating activity data for all Title 14 Code of Federal Regulations Part 135 certificate holders, either through mandatory reporting or some other means, to include the identification of activity by certificate type (air carrier or operating), operating authority (on-demand or commuter) and scope (standard, basic, single-pilot, or…
Study Focus: Review qualification and recent-experience requirements.
Response Status: Open - Acceptable Response
Recipient: FAA
Jun 11, 2024
From the Document
This report discusses the January 13, 2023, runway incursion incident involving American Airlines (AAL) flight 106, a Boeing 777-200, and Delta Air Lines (DAL) flight 1943, a Boeing 737-900, at John F. Kennedy International Airport (JFK), Queens, New York. The flight crew of the AAL airplane was instructed to taxi to runway 4L for departure and cross runway 31L; however, the crew crossed runway 4L, where the DAL airplane had just begun its…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Encourage Title 14 Code of Federal Regulations Part 91K, 135, and 121 operators to incorporate into their standard operating procedures a procedural crosscheck that requires flight crews to verbalize the number of a runway they are about to cross, as indicated by runway signs, unless an installed automated system already provides an aural advisory.
Study Focus: Review surface awareness and decisions during taxi, takeoff and landing.
Response Status: Open - Unacceptable Response
Recipient: FAA
Jun 11, 2024
From the Document
This report discusses the January 13, 2023, runway incursion incident involving American Airlines (AAL) flight 106, a Boeing 777-200, and Delta Air Lines (DAL) flight 1943, a Boeing 737-900, at John F. Kennedy International Airport (JFK), Queens, New York. The flight crew of the AAL airplane was instructed to taxi to runway 4L for departure and cross runway 31L; however, the crew crossed runway 4L, where the DAL airplane had just begun its…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Encourage Title 14 Code of Federal Regulations Part 121 operators to use their safety management system to identify flight crew surface navigation errors resulting from the performance of concurrent tasks during taxi and develop and implement effective risk mitigation strategies considering human factors principles.
Study Focus: Review surface awareness and decisions during taxi, takeoff and landing.
Response Status: Open Acceptable Alternate Response
Recipient: FAA
Jun 11, 2024
From the Document
This report discusses the January 13, 2023, runway incursion incident involving American Airlines (AAL) flight 106, a Boeing 777-200, and Delta Air Lines (DAL) flight 1943, a Boeing 737-900, at John F. Kennedy International Airport (JFK), Queens, New York. The flight crew of the AAL airplane was instructed to taxi to runway 4L for departure and cross runway 31L; however, the crew crossed runway 4L, where the DAL airplane had just begun its…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Collaborate with aircraft and avionics manufacturers and software designers to develop the technology for a flight deck system that would provide visual and aural alerts to flight crews of traffic on a runway or taxiway and traffic on approach to land. (Supersedes A-00-66)
Study Focus: Review surface awareness and decisions during taxi, takeoff and landing.
Response Status: Open - Unacceptable Response
Recipient: FAA
Jun 11, 2024
From the Document
This report discusses the January 13, 2023, runway incursion incident involving American Airlines (AAL) flight 106, a Boeing 777-200, and Delta Air Lines (DAL) flight 1943, a Boeing 737-900, at John F. Kennedy International Airport (JFK), Queens, New York. The flight crew of the AAL airplane was instructed to taxi to runway 4L for departure and cross runway 31L; however, the crew crossed runway 4L, where the DAL airplane had just begun its…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Require that the technology developed in response to Safety Recommendation A-24-4 be installed in all newly certificated transport-category airplanes. (Supersedes A-00-66)
Study Focus: Review surface awareness and decisions during taxi, takeoff and landing.
Response Status: Open - Unacceptable Response
Recipient: FAA
Jun 11, 2024
From the Document
This report discusses the January 13, 2023, runway incursion incident involving American Airlines (AAL) flight 106, a Boeing 777-200, and Delta Air Lines (DAL) flight 1943, a Boeing 737-900, at John F. Kennedy International Airport (JFK), Queens, New York. The flight crew of the AAL airplane was instructed to taxi to runway 4L for departure and cross runway 31L; however, the crew crossed runway 4L, where the DAL airplane had just begun its…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Require that existing transport-category airplanes be retrofitted with the technology developed in response to Safety Recommendation A-24-4. (Supersedes A-00-66)
Study Focus: Review surface awareness and decisions during taxi, takeoff and landing.
Response Status: Open - Unacceptable Response
Recipient: FAA
Jun 11, 2024
From the Document
This report discusses the January 13, 2023, runway incursion incident involving American Airlines (AAL) flight 106, a Boeing 777-200, and Delta Air Lines (DAL) flight 1943, a Boeing 737-900, at John F. Kennedy International Airport (JFK), Queens, New York. The flight crew of the AAL airplane was instructed to taxi to runway 4L for departure and cross runway 31L; however, the crew crossed runway 4L, where the DAL airplane had just begun its…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Evaluate the effectiveness of the activation logic for the runway status light system considering the circumstances of this incident.
Study Focus: Review surface awareness and decisions during taxi, takeoff and landing.
Response Status: Open - Acceptable Response
Recipient: FAA
Jun 11, 2024
From the Document
This report discusses the January 13, 2023, runway incursion incident involving American Airlines (AAL) flight 106, a Boeing 777-200, and Delta Air Lines (DAL) flight 1943, a Boeing 737-900, at John F. Kennedy International Airport (JFK), Queens, New York. The flight crew of the AAL airplane was instructed to taxi to runway 4L for departure and cross runway 31L; however, the crew crossed runway 4L, where the DAL airplane had just begun its…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Using the findings of the evaluation conducted in response to Safety Recommendation A-24-7, update the runway status light system activation logic as necessary to improve system effectiveness.
Study Focus: Review surface awareness and decisions during taxi, takeoff and landing.
Response Status: Open - Acceptable Response
Recipient: FAA
Jun 11, 2024
From the Document
This report discusses the January 13, 2023, runway incursion incident involving American Airlines (AAL) flight 106, a Boeing 777-200, and Delta Air Lines (DAL) flight 1943, a Boeing 737-900, at John F. Kennedy International Airport (JFK), Queens, New York. The flight crew of the AAL airplane was instructed to taxi to runway 4L for departure and cross runway 31L; however, the crew crossed runway 4L, where the DAL airplane had just begun its…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Require retrofit of all cockpit voice recorders (CVR) on all airplanes required to carry both a CVR and a flight data recorder with a CVR capable of recording the last 25 hours of audio. (Supersedes A-18-31)
Study Focus: Review surface awareness and decisions during taxi, takeoff and landing.
Response Status: Open - Unacceptable Response
Recipient: FAA
Jan 22, 2024
From the Document
On September 28, 2021, about 0900 central daylight time, a Rockwell International 690B airplane, N690LS, impacted wooded terrain near Hiles, Wisconsin, after entering an inadvertent stall and spin. The pilot and two passengers sustained fatal injuries. The aerial imagery survey flight was operated by Surdex Corporation under Title 14 Code of Federal Regulations (CFR) Part 91.
Requested Action: TO ONTIC: Develop a supplement that documents a spin recovery technique for inclusion in the Twin Commander Aircraft 690, 690A, and 690B models’ Pilot Operating Handbooks and distribute this information to all owners and operators of these aircraft.
Study Focus: Review aircraft-control risks and recognition of developing hazards.
Response Status: Open - Acceptable Response
Recipient: ONTIC
Dec 2, 2022
From the Document
The National Transportation Safety Board (NTSB) is providing the following information to urge the Federal Aviation Administration (FAA) and Transport Canada to take immediate action on the safety recommendations in this report. We identified this issue during our ongoing investigation of the June 8, 2022 accident involving a Bell 407 helicopter, N402SH, which experienced an inflight separation of its tailboom during cruise flight near Kalea,…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Require operators of Bell 407 helicopters to conduct an immediate torque check of the tail boom attachment hardware, as well as a visual inspection of the tail boom attachment fittings for evidence of cracks and fractures, and report findings to the FAA. (Urgent)
Study Focus: Review maintenance and airworthiness responsibilities.
Response Status: Closed - Unacceptable Action
Recipient: FAA
Nov 29, 2022
From the Document
The National Transportation Safety Board (NTSB) is providing the following information to urge the Federal Aviation Administration (FAA) and the National Weather Service to take action on the safety recommendations in this report. These recommendations are derived from findings from the investigation of an August 2021 air tour airplane accident in Ketchikan, Alaska, as well as from our review of previous investigations of Title 14 Code of…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: In collaboration with the local National Weather Service, develop and issue a special federal aviation regulation for air tour airplane flights in the Ketchikan area that imposes weather minimums that are more conservative than those specified in Title 14 Code of Federal Regulations Part 135 and requires the operational elements of the Ketchikan operators’ voluntary letter of agreement such as standard…
Study Focus: Review weather hazards and how they affect planning and flight decisions.
Response Status: Open - Acceptable Response
Recipient: FAA
Nov 29, 2022
From the Document
The National Transportation Safety Board (NTSB) is providing the following information to urge the Federal Aviation Administration (FAA) and the National Weather Service to take action on the safety recommendations in this report. These recommendations are derived from findings from the investigation of an August 2021 air tour airplane accident in Ketchikan, Alaska, as well as from our review of previous investigations of Title 14 Code of…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Develop and require training for all Ketchikan air tour airplane pilots aimed at reducing the risk of weather-related accidents involving continuation of flight under visual flight rules into instrument meteorological conditions. The training should include (1) objective standards, such as landmarks that must be clearly visible from particular locations that pilots can use to determine whether weather…
Study Focus: Review weather hazards and how they affect planning and flight decisions.
Response Status: Open - Acceptable Response
Recipient: FAA
Nov 29, 2022
From the Document
The National Transportation Safety Board (NTSB) is providing the following information to urge the Federal Aviation Administration (FAA) and the National Weather Service to take action on the safety recommendations in this report. These recommendations are derived from findings from the investigation of an August 2021 air tour airplane accident in Ketchikan, Alaska, as well as from our review of previous investigations of Title 14 Code of…
Requested Action: TO THE NATIONAL WEATHER SERVICE: Work with the Federal Aviation Administration to develop the special federal aviation regulation in Safety Recommendation A-22-25 for air tour airplane flights in the Ketchikan area that imposes weather minimums that are more conservative than those specified in Title 14 Code of Federal Regulations Part 135.
Study Focus: Review weather hazards and how they affect planning and flight decisions.
Response Status: Open - Acceptable Response
Recipient: United States Department of Commerce, National Oceanic and Atmospheric Administration, National Weather Service
Oct 27, 2022
From the Document
The National Transportation Safety Board (NTSB) is providing this information to urge the Federal Aviation Administration (FAA) and Transport Canada to take immediate action on the safety recommendations in this report. We identified this issue during our ongoing investigation of the September 4, 2022, accident involving a De Havilland Canada DHC-3, N725TH, which entered a nose-down, near vertical descent and impacted the water in Mutiny Bay,…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Require all operators of De Havilland Canada DHC-3 airplanes to conduct an immediate one-time inspection of the horizontal stabilizer actuator lock ring in accordance with the instructions in Viking Air Limited Service Letter DHC3-SL-27-001 and report their findings to the Federal Aviation Administration. (Urgent)
Study Focus: Review maintenance and airworthiness responsibilities.
Response Status: Closed - Acceptable Action
Recipient: FAA
Oct 27, 2022
From the Document
The National Transportation Safety Board (NTSB) is providing this information to urge the Federal Aviation Administration (FAA) and Transport Canada to take immediate action on the safety recommendations in this report. We identified this issue during our ongoing investigation of the September 4, 2022, accident involving a De Havilland Canada DHC-3, N725TH, which entered a nose-down, near vertical descent and impacted the water in Mutiny Bay,…
Requested Action: TO TRANSPORT CANADA: Require all operators of De Havilland Canada DHC-3 airplanes to conduct an immediate one-time inspection of the horizontal stabilizer actuator lock ring in accordance with the instructions in Viking Air Limited Service Letter DHC3-SL-27-001 and report their findings to Transport Canada. (Urgent)
Study Focus: Review maintenance and airworthiness responsibilities.
Response Status: Open Acceptable Alternate Response
Recipient: Foreign, Canada, Transport Canada, Civil Aviation
Jun 2, 2022
From the Document
The National Transportation Safety Board (NTSB) is providing the following information to urge the Federal Aviation Administration (FAA) and the National Weather Service (NWS) to take action on the safety recommendations in this report. We identified a safety issue during our ongoing investigation of an accident involving a Cessna 208B airplane that was substantially damaged after an in-flight upset resulting from an inadvertent encounter with…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: In collaboration with the National Weather Service, develop a graphical forecast depicting potential areas of supercooled large droplet icing conditions in Alaska and make this information available to pilots.
Study Focus: Review weather hazards and how they affect planning and flight decisions.
Response Status: Closed - Acceptable Action
Recipient: FAA
Jun 2, 2022
From the Document
The National Transportation Safety Board (NTSB) is providing the following information to urge the Federal Aviation Administration (FAA) and the National Weather Service (NWS) to take action on the safety recommendations in this report. We identified a safety issue during our ongoing investigation of an accident involving a Cessna 208B airplane that was substantially damaged after an in-flight upset resulting from an inadvertent encounter with…
Requested Action: TO THE NATIONAL WEATHER SERVICE: Work with the Federal Aviation Administration to develop a graphical forecast depicting potential areas of supercooled large droplet icing conditions in Alaska and make this information available to pilots.
Study Focus: Review weather hazards and how they affect planning and flight decisions.
Response Status: Closed - Acceptable Action
Recipient: United States Department of Commerce, National Oceanic and Atmospheric Administration, National Weather Service
May 26, 2022
From the Document
This report discusses the December 26, 2019, accident involving a seven-seat helicopter operated by Safari Aviation Inc. as a commercial air tour flight that encountered instrument meteorological conditions and collided into terrain in a remote, wooded area near Kekaha, Hawaii, on the island of Kauai. The pilot and the six passengers were fatally injured, and the helicopter was destroyed. Safety issues identified in this report include limited…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Install the necessary infrastructure in Hawaii to enable continuous radio communication between the pilots of low-flying tour flights and ground support personnel, such as flight service station specialists and company flight support personnel, along the most heavily trafficked air tour routes.
Study Focus: Review weather hazards and how they affect planning and flight decisions.
Response Status: Open - Acceptable Response
Recipient: FAA
May 26, 2022
From the Document
This report discusses the December 26, 2019, accident involving a seven-seat helicopter operated by Safari Aviation Inc. as a commercial air tour flight that encountered instrument meteorological conditions and collided into terrain in a remote, wooded area near Kekaha, Hawaii, on the island of Kauai. The pilot and the six passengers were fatally injured, and the helicopter was destroyed. Safety issues identified in this report include limited…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Implement automatic dependent surveillance-broadcast (ADS-B) infrastructure improvements in Hawaii, such as additional ADS-B ground stations, that provide adequate coverage to enable real-time flight tracking and traffic advisory services for ADS-B Out- and In-equipped, low-flying air tour aircraft throughout their entire tour routes.
Study Focus: Review weather hazards and how they affect planning and flight decisions.
Response Status: Open - Acceptable Response
Recipient: FAA
May 26, 2022
From the Document
This report discusses the December 26, 2019, accident involving a seven-seat helicopter operated by Safari Aviation Inc. as a commercial air tour flight that encountered instrument meteorological conditions and collided into terrain in a remote, wooded area near Kekaha, Hawaii, on the island of Kauai. The pilot and the six passengers were fatally injured, and the helicopter was destroyed. Safety issues identified in this report include limited…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: As an interim measure until completion of the action to satisfy Safety Recommendation A-21-15, require Hawaii air tour operators to install Automatic Dependent Surveillance-Broadcast Out (ADS-B) equipment in their aircraft to enable real-time flight position tracking.
Study Focus: Review weather hazards and how they affect planning and flight decisions.
Response Status: Open - Acceptable Response
Recipient: FAA
May 26, 2022
From the Document
This report discusses the December 26, 2019, accident involving a seven-seat helicopter operated by Safari Aviation Inc. as a commercial air tour flight that encountered instrument meteorological conditions and collided into terrain in a remote, wooded area near Kekaha, Hawaii, on the island of Kauai. The pilot and the six passengers were fatally injured, and the helicopter was destroyed. Safety issues identified in this report include limited…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Require air tour operators to have flight support personnel who are trained to exercise operational control authority, participate in preflight risk analysis, provide pilots with weather briefings, monitor the progress of the flights, and participate in two-way communications with pilots to alert them of any weather hazards.
Study Focus: Review weather hazards and how they affect planning and flight decisions.
Response Status: Open - Unacceptable Response
Recipient: FAA
May 26, 2022
From the Document
This report discusses the December 26, 2019, accident involving a seven-seat helicopter operated by Safari Aviation Inc. as a commercial air tour flight that encountered instrument meteorological conditions and collided into terrain in a remote, wooded area near Kekaha, Hawaii, on the island of Kauai. The pilot and the six passengers were fatally injured, and the helicopter was destroyed. Safety issues identified in this report include limited…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Develop guidance for small operators for scaling a safety management system that includes methods and techniques for implementation and specific examples applicable to several operational sectors, including air tours.
Study Focus: Review weather hazards and how they affect planning and flight decisions.
Response Status: Closed - Acceptable Action
Recipient: FAA
May 26, 2022
From the Document
This report discusses the December 26, 2019, accident involving a seven-seat helicopter operated by Safari Aviation Inc. as a commercial air tour flight that encountered instrument meteorological conditions and collided into terrain in a remote, wooded area near Kekaha, Hawaii, on the island of Kauai. The pilot and the six passengers were fatally injured, and the helicopter was destroyed. Safety issues identified in this report include limited…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Issue a safety alert for operators to encourage air tour operators to establish safety assurance processes to routinely review recorded onboard videos and automatic dependent surveillance-broadcast (ADS-B) flight tracking data, ideally as part of a safety management system with an integrated flight data monitoring program, for the purpose of identifying and addressing risky trends in weather-related…
Study Focus: Review weather hazards and how they affect planning and flight decisions.
Response Status: Open - Unacceptable Response
Recipient: FAA
May 26, 2022
From the Document
This report discusses the December 26, 2019, accident involving a seven-seat helicopter operated by Safari Aviation Inc. as a commercial air tour flight that encountered instrument meteorological conditions and collided into terrain in a remote, wooded area near Kekaha, Hawaii, on the island of Kauai. The pilot and the six passengers were fatally injured, and the helicopter was destroyed. Safety issues identified in this report include limited…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Improve the surveillance of air tour operations in Hawaii through the use of technologies and innovative approaches, including but not limited to comparing automatic dependent surveillance-broadcast (ADS-B) flight position data from air tour flights with weather camera imagery for the route and periodically reviewing onboard video recordings, to detect and correct operating practices that may lead to…
Study Focus: Review weather hazards and how they affect planning and flight decisions.
Response Status: Open - Unacceptable Response
Recipient: FAA
May 26, 2022
From the Document
This report discusses the December 26, 2019, accident involving a seven-seat helicopter operated by Safari Aviation Inc. as a commercial air tour flight that encountered instrument meteorological conditions and collided into terrain in a remote, wooded area near Kekaha, Hawaii, on the island of Kauai. The pilot and the six passengers were fatally injured, and the helicopter was destroyed. Safety issues identified in this report include limited…
Requested Action: TO THE FEDERAL AVIATION ADMINISTRATION: Issue and periodically update a special airworthiness information bulletin that lists newly manufactured helicopters that are equipped with features likely to reduce accidents resulting from inadvertent encounters with instrument meteorological conditions, describes retrofit options for helicopters that do not have such equipment, and encourages the voluntary integration of these safety features.
Study Focus: Review weather hazards and how they affect planning and flight decisions.
Response Status: Open - Acceptable Response
Recipient: FAA
May 26, 2022
From the Document
This report discusses the December 26, 2019, accident involving a seven-seat helicopter operated by Safari Aviation Inc. as a commercial air tour flight that encountered instrument meteorological conditions and collided into terrain in a remote, wooded area near Kekaha, Hawaii, on the island of Kauai. The pilot and the six passengers were fatally injured, and the helicopter was destroyed. Safety issues identified in this report include limited…
Requested Action: TO THE VERTICAL AVIATION SAFETY TEAM: Include, in your proposed helicopter safety rating system, helicopter safety features for preventing accidents resulting from inadvertent encounters with instrument meteorological conditions.
Study Focus: Review weather hazards and how they affect planning and flight decisions.
Response Status: Closed - Acceptable Action
Recipient: Vertical Aviation Safety Team