Legal Interpretations
Lyons-BostonAir 2011
Summary
The Question
Does 14 CFR part 91 create compliance requirements for NOTAM(D) information, such as a NOTAM(D) closing a runway?
Background
The chief pilot of Boston Air Charter asked what happens if a pilot in command, unable to reach the airport operator, decides a NOTAM(D) closing a runway for braking action determination or flooding does not reflect actual conditions and takes off uneventfully.
The FAA’s Interpretation
Indirectly. NOTAM(D)s are advisory (only FDC NOTAMs are regulatory), but 14 CFR 91.103 requires pilots to become familiar with all available information before a flight, including NOTAMs for their flight path. If a pilot disregards a NOTAM(D) and takes off on a closed runway, absent an emergency, the FAA would investigate a possible violation of 14 CFR 91.13; at a controlled airport, it could violate 14 CFR 91.123(a) or (b).
- Requester
- Lyons
- Organization
- BostonAir
- Issued
- March 29, 2011
- Subject
- General Operating & Flight Rules
Regulations Cited
Page 1
U.S. Deportment
of Transportation
Federal Aviation
Administration
MAR '.2 :; Wtf
Douglas Lyons
Office of the Chief Counsel
Chief Pilot, Boston Air Charter
P.O. Box 829
Norwood, MA 02062
Dear Mr. Lyons:
800 Independence Ave., S.W.
Washington, D.C. 20591
This is in response to your letter dated November 29, 2010, requesting an interpretation regarding whether there are Federal compliance requirements that exist under 14 CFR part .91 for NOTAM(D) information.
NOTAM information is time-critical aeronautical information which is of either a temporary nature or not sufficiently known in advance to permit publication on aeronautical charts or in other operational publications. AIM, paragraph 5-1-3(a). This information is immediately disseminated via the National NOTAM System. There are four categories of NOT AMs: NOTAM(D)s or distant, Flight Data Center (FDC) NOTAMs, Pointer NOTAMs, and Military NOTAMs. Of these four categories, only FDC NOTAMs contain information that is regulatory in nature. AIM, paragraph 5-1-3 (2)(a).
NOTAM(D)s consist of information that is disseminated for all navigational facilities that are part of the National Airspace System, all public use airports, seaplane bases, and heliports listed in the Airport/Facility Directory. NOTAM(D) information includes such data as taxiway closures, personnel and equipment near or crossing runways, and airport lighting aids that do not affect instrument approach criteria, such as Visual Approach Slope Indicators.
In your letter, you present a scenario in which a NOTAM(D), issued by the local operating authority, states that a runway is closed for braking action determination as defined in a local snow removal plan or for runway flooding. You ask what would happen if a pilot in command, who is unable to communicate with the airport operating authority, determines that the NOTAMs do not reflect the actual runway conditions and conducts an uneventful t~eoff operation.
NOTAM(D)s contain advisory information. They are issued to provide pilots with accurate and up-to-date information related to their flight paths. Before beginning a flight, pilots are required to become familiar with all available information concerning that flight. 14 CFR 91.103. This includes all NOTAMs referencing the pilot's flight path. These NOTAMs are in place for the safety of both the pilot and the general public.
Page 2
If a pilot chooses to disregard information in a NOTAM(D) and takes off on a closed runway, absent an emergency, the FAA would investigate whether the pilot violated 14 CFR 91.13 and operated an aircraft "in a careless or reckless manner so as to endanger the life or property of another." Additionally, taking off on a closed runway at a controlled airport could constitute a violation of 14 CFR 91.123(a) or (b).
I hope this information has been helpful. This interpretation has been coordinated with Flight Standards Service, General Aviation and Commercial Division (AFS-800, AFS-820) and Aeronautical Information Management (AJV-2). If you have further questions concerning this interpretation, please contact Sabrina Jawed on my staff at 202-267-3073.
Sincerely,
~ir-;.rsfif:
Assistant Chief Counsel for Regulations, AGC-200
Regulations Referenced
Snapshot retrieved August 6, 2026.