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14 CFR
  1. 14 CFR

    Part 1: Definitions and Abbreviations
  2. Part 5: Safety Management Systems
  3. Part 21: Certification Procedures for Products and Articles
  4. Part 23: Airworthiness Standards: Normal Category Airplanes
  5. Part 25: Airworthiness Standards: Transport Category Airplanes
  6. Part 27: Airworthiness Standards: Normal Category Rotorcraft
  7. Part 29: Airworthiness Standards: Transport Category Rotorcraft
  8. Part 33: Airworthiness Standards: Aircraft Engines
  9. Part 35: Airworthiness Standards: Propellers
  10. Part 39: Airworthiness Directives
  11. Part 43: Maintenance, Preventive Maintenance, Rebuilding, and Alteration
  12. Part 45: Identification and Registration Marking
  13. Part 47: Aircraft Registration
  14. Part 48: Registration and Marking Requirements for Small Unmanned Aircraft
  15. Part 49: Recording of Aircraft Titles and Security Documents
  16. Part 60: Flight Simulation Training Device Initial and Continuing Qualification and Use
  17. Part 61: Certification: Pilots, Flight Instructors, and Ground Instructors
  18. Part 65: Certification: Airmen Other Than Flight Crewmembers
  19. Part 67: Medical Standards and Certification
  20. Part 68: Requirements for Operating Certain Small Aircraft Without a Medical Certificate
  21. Part 71: Designation of Class A, B, C, D, and E Airspace Areas; Air Traffic Service Routes; and Reporting Points
  22. Part 73: Special Use Airspace
    1. Subpart A General
    2. § 73.1 Applicability.
    3. § 73.3 Special use airspace.
    4. § 73.5 Bearings; radials; miles.
    5. Subpart B Restricted Areas
    6. § 73.11 Applicability.
    7. § 73.13 Restrictions.
    8. § 73.15 Using agency.
    9. § 73.17 Controlling agency.
    10. § 73.19 Reports by using agency.
    11. Subpart C Prohibited Areas
    12. § 73.81 Applicability.
    13. § 73.83 Restrictions.
    14. § 73.85 Using agency.
  23. Part 89: Remote Identification of Unmanned Aircraft
  24. Part 91: General Operating and Flight Rules
  25. Part 93: Special Air Traffic Rules
  26. Part 95: IFR Altitudes
  27. Part 97: Standard Instrument Procedures
  28. Part 99: Security Control of Air Traffic
  29. Part 101: Moored Balloons, Kites, Amateur Rockets, and Unmanned Free Balloons
  30. Part 103: Ultralight Vehicles
  31. Part 105: Parachute Operations
  32. Part 107: Small Unmanned Aircraft Systems
  33. Part 110: General Requirements
  34. Part 111: Pilot Records Database
  35. Part 117: Flight and Duty Limitations and Rest Requirements: Flightcrew Members
  36. Part 119: Certification: Air Carriers and Commercial Operators
  37. Part 121: Operating Requirements: Domestic, Flag, and Supplemental Operations
  38. Part 133: Rotorcraft External-Load Operations
  39. Part 135: Operating Requirements: Commuter and on Demand Operations and Rules Governing Persons on Board Such Aircraft
  40. Part 136: Commercial Air Tours and National Parks Air Tour Management
  41. Part 137: Agricultural Aircraft Operations
  42. Part 141: Pilot Schools
  43. Part 142: Training Centers
  44. Part 145: Repair Stations
  45. Part 147: Aviation Maintenance Technician Schools
  46. 49 CFR

    Part 175: Carriage by Aircraft
  47. Part 830: Notification and Reporting of Aircraft Accidents or Incidents and Overdue Aircraft, and Preservation of Aircraft Wreckage, Mail, Cargo, and Records
  48. Part 1552: Flight Training Security Program

14 CFR|eCFR Sep 29, 2026

Part 73

Special Use Airspace

11 Sections|§§ 73.1–73.85

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Subpart A General

§ 73.1 Applicability.

The airspace that is described in subpart B and subpart C of this part is designated as special use airspace. These parts prescribe the requirements for the use of that airspace.

§ 73.3 Special use airspace.

(a)

Special use airspace consists of airspace of defined dimensions identified by an area on the surface of the earth wherein activities must be confined because of their nature, or wherein limitations are imposed upon aircraft operations that are not a part of those activities, or both.

(b)

The vertical limits of special use airspace are measured by designated altitude floors and ceilings expressed as flight levels or as feet above mean sea level. Unless otherwise specified, the word “to” (an altitude or flight level) means “to and including” (that altitude or flight level).

(c)

The horizontal limits of special use airspace are measured by boundaries described by geographic coordinates or other appropriate references that clearly define their perimeter.

(d)

The period of time during which a designation of special use airspace is in effect is stated in the designation.

§ 73.5 Bearings; radials; miles.

(a)

All bearings and radials in this part are true from point of origin.

(b)

Unless otherwise specified, all mileages in this part are stated as statute miles.

Subpart B Restricted Areas

§ 73.11 Applicability.

This subpart designates restricted areas and prescribes limitations on the operation of aircraft within them.

§ 73.13 Restrictions.

No person may operate an aircraft within a restricted area between the designated altitudes and during the time of designation, unless he has the advance permission of

(a)

The using agency described in § 73.15; or

(b)

The controlling agency described in § 73.17.

§ 73.15 Using agency.

(a)

For the purposes of this subpart, the following are using agencies;

(1)

The agency, organization, or military command whose activity within a restricted area necessitated the area being so designated.

(b)

Upon the request of the FAA, the using agency shall execute a letter establishing procedures for joint use of a restricted area by the using agency and the controlling agency, under which the using agency would notify the controlling agency whenever the controlling agency may grant permission for transit through the restricted area in accordance with the terms of the letter.

(c)

The using agency shall—

(1)

Schedule activities within the restricted area;

(2)

Authorize transit through, or flight within, the restricted area as feasible; and

(3)

Contain within the restricted area all activities conducted therein in accordance with the purpose for which it was designated.

§ 73.17 Controlling agency.

For the purposes of this part, the controlling agency is the FAA facility that may authorize transit through or flight within a restricted area in accordance with a joint-use letter issued under § 73.15.

§ 73.19 Reports by using agency.

(a)

Each using agency must prepare a report on the use of each restricted area assigned thereto during any part of the preceding 12-month period ended September 30, and transmit it by the following January 31 of each year to the Manager, Operations Support Group in the ATO Service Center office of the Federal Aviation Administration having jurisdiction over the area in which the restricted area is located, with a copy to the Manager, Airspace Policy Group, Federal Aviation Administration, 800 Independence Avenue SW, Washington, DC 20591.

(b)

In the report under this section the using agency must:

(1)

State the name and number of the restricted area as published in this part, and the period covered by the report.

(2)

State the activities (including average daily number of operations if appropriate) conducted in the area, and any other pertinent information concerning current and future electronic monitoring devices.

(3)

State the number of hours daily, the days of the week, and the number of weeks during the year that the area was used.

(4)

For restricted areas having a joint-use designation, also state the number of hours daily, the days of the week, and the number of weeks during the year that the restricted area was released to the controlling agency for public use.

(5)

State the mean sea level altitudes or flight levels (whichever is appropriate) used in aircraft operations and the maximum and average ordinate of surface firing (expressed in feet, mean sea level altitude) used on a daily, weekly, and yearly basis.

(6)

Include a chart of the area (of optional scale and design) depicting, if used, aircraft operating areas, flight patterns, ordnance delivery areas, surface firing points, and target, fan, and impact areas. After once submitting an appropriate chart, subsequent annual charts are not required unless there is a change in the area, activity or altitude (or flight levels) used, which might alter the depiction of the activities originally reported. If no change is to be submitted, a statement indicating “no change” shall be included in the report.

(7)

Include any other information not otherwise required under this part which is considered pertinent to activities carried on in the restricted area.

(c)

If it is determined that the information submitted under paragraph (b) of this section is not sufficient to evaluate the nature and extent of the use of a restricted area, the FAA may request the using agency to submit supplementary reports. Within 60 days after receiving a request for additional information, the using agency must submit such information as the FAA Service Center Operations Support Group Manager considers appropriate. Supplementary reports must be sent to the FAA officials designated in paragraph (a) of this section.

Subpart C Prohibited Areas

§ 73.81 Applicability.

This subpart designates prohibited areas and prescribes limitations on the operation of aircraft therein.

§ 73.83 Restrictions.

No person may operate an aircraft within a prohibited area unless authorization has been granted by the using agency.

§ 73.85 Using agency.

For the purpose of this subpart, the using agency is the agency, organization or military command that established the requirements for the prohibited area.

Previous PartPart 71: Designation of Class A, B, C, D, and E Airspace Areas; Air Traffic Service Routes; and Reporting PointsNext Part Part 89: Remote Identification of Unmanned Aircraft

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Subpart A General

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