14 CFR Part 39
27 final rules have amended 14 CFR Part 39 since September 2026
Every final rule amending 14 CFR Part 39, Airworthiness Directives, recorded by effective date across 2 months and 2 agencies. Rules whose date has passed are kept: they are what the part now says.
Final rules amending this part, September 2026 onward.
Carrying an effective date that has not arrived.
Promulgating bodies that have amended it.
What this part is
14 CFR Part 39 - Airworthiness Directives
The most recent change to this part takes effect 16 October 2026: Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines. The source describes it as superseding Airworthiness Directive (AD) 2020-06-16 for certain Rolls-Royce Deutschland Ltd & Co KG (RRD) Model RB211 Trent 768-60, 772-60, and 772B-60 engines.
Airworthiness Directives sits in Title 14 of the Code of Federal Regulations, Aeronautics and Space. Over the 2 months in this record it has been amended by 27 final rules, roughly 13.5 a month. Every one of them came from the Transportation Department. 27 carry an effective date that has not arrived yet.
Part heading read from the eCFR Versioner API as of 30 August 2026. Amendment counts are this property's own join of the Federal Register against that heading; the two sources do not publish it together.
Near this part
Other parts of the Code that move with this one
- 0114 CFR 71 - Designation of Class A, B, C, D, and E Airspace Areas; Air Traffic Service Routes; and Reporting Points33 rules · also in Title 14
- 0249 CFR 192 - Transportation of Natural and Other Gas by Pipeline: Minimum Federal Safety Standards26 rules · also written by the Transportation Department
- 0349 CFR 195 - Transportation of Hazardous Liquids by Pipeline9 rules · also written by the Transportation Department
Parts of the same CFR title come first, because a shared title is a statement about subject matter while a shared parent department is a statement about org charts. Within each group, ranked by how much of a record the part carries. Computed from this build, read 12 September 2026.
Who amends it
Agencies amending 14 CFR Part 39
Promulgating bodies with at least one final rule against this part in the record. Source: Federal Register API, read 12 September 2026.
The records
Every rule amending this part
Oldest first, by the day each rule took effect. Rules whose date has passed are kept: they are what the part now says. A red margin rule marks a rule binding today; a faint rule marks one binding within 30 days.
-
001
Airworthiness Directives; Lycoming Engines
Prior state replacement of the affected piston pin with a part eligible for installation and, for certain engines, oil change and visual inspection of the engine oil filter, oil pressure screen, and oil suction screen for metal particulates.
in 2 days Federal Register → -
002
Airworthiness Directives; Bell Textron Canada Limited Helicopters
Prior state Not stated in the source document.
in 2 days Federal Register → -
003
Airworthiness Directives; The Boeing Company Airplanes
Prior state superseding Airworthiness Directive (AD) 2018-11- 14, which applied to certain The Boeing Company Model 767-300 and -300F series airplanes with certain winglets installed.
in 5 days Federal Register → -
004
Airworthiness Directives; Airbus Helicopters
Prior state replacing both side supports.
in 5 days Federal Register → -
005
Airworthiness Directives; Airbus Helicopters
Prior state revising the airworthiness limitations section (ALS) of the existing maintenance manual (MM) or instructions for continued airworthiness (ICA) and the existing approved maintenance or inspection program, as applicable.
in 5 days Federal Register → -
006
Airworthiness Directives; Airbus Helicopters
Prior state Not stated in the source document.
in 5 days Federal Register → -
007
Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines
Prior state replacement of the IP compressor VIGVs.
in 6 days Federal Register → -
008
Airworthiness Directives; Airbus Helicopters
Prior state superseding Airworthiness Directive (AD) 2023-25- 14, which applied to certain Airbus Helicopters Model EC130T2 helicopters.
in 6 days Federal Register → -
009
Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes
Prior state superseding Airworthiness Directive (AD) 2023-21- 10, which applied to certain ATR-GIE Avions de Transport R[eacute]gional Model ATR42-500 and ATR72-212A airplanes.
in 6 days Federal Register → -
010
Airworthiness Directives; Gulfstream Aerospace LP (Type Certificate Previously Held by Israel Aircraft Industries, Ltd.) Airplanes
Prior state revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations.
in 6 days Federal Register → -
011
Airworthiness Directives; Airbus SAS Airplanes
Prior state Not stated in the source document.
in 6 days Federal Register → -
012
Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes
Prior state revising the existing maintenance or inspection program, as applicable, to incorporate a new airworthiness limitation.
in 6 days Federal Register → -
013
Airworthiness Directives; Airbus SAS Airplanes
Prior state Not stated in the source document.
in 6 days Federal Register → -
014
Airworthiness Directives; International Aero Engines AG Engines
Prior state replacement of affected 3rd stage HPC rotor blades with parts eligible for installation.
in 12 days Federal Register → -
015
Airworthiness Directives; International Aero Engines AG Engines; Correction
Prior state Not stated in the source document.
in 12 days Federal Register → -
016
Airworthiness Directives; Airbus SAS Airplanes
Prior state superseding Airworthiness Directive (AD) 2024-25- 06, which applied to all Airbus SAS Model A318 and A320 series airplanes; and Model A319-111, -112, -113, -114, -115, -131, -132, - 133, -151N, -153N, and -171N airplanes; and Model A321-111, -112, -131, -211, -212, -213, -231, -232, -251N, -252N,…
in 19 days Federal Register → -
017
Airworthiness Directives; Airbus SAS Airplanes
Prior state Not stated in the source document.
in 19 days Federal Register → -
018
Airworthiness Directives; The Boeing Company Airplanes
Prior state Not stated in the source document.
in 19 days Federal Register → -
019
Airworthiness Directives; Leonardo S.p.A. Helicopters
Prior state Not stated in the source document.
in 20 days Federal Register → -
020
Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines
Prior state Not stated in the source document.
in 20 days Federal Register → -
021
Airworthiness Directives; Various Helicopters
Prior state replacing each affected rescue hoist assembly with a serviceable rescue hoist assembly.
in 20 days Federal Register → -
022
Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes
Prior state Not stated in the source document.
in 20 days Federal Register → -
023
Airworthiness Directives; Pratt & Whitney Division Engines
Prior state replacing the HPC drum rotor disk assembly with a part eligible for installation.
in 26 days Federal Register → -
024
Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines
Prior state superseding Airworthiness Directive (AD) 2020-06-16 for certain Rolls-Royce Deutschland Ltd & Co KG (RRD) Model RB211 Trent 768-60, 772-60, and 772B-60 engines.
in 34 days Federal Register → -
025
Airworthiness Directives; Gulfstream Aerospace LP (Type Certificate Previously Held by Israel Aircraft Industries, Ltd.) Airplanes
Prior state superseding Airworthiness Directive (AD) 2025-15- 04, which applied to all Gulfstream Aerospace LP Model G150 airplanes.
in 34 days Federal Register → -
026
Airworthiness Directives; Dassault Aviation Airplanes
Prior state superseding Airworthiness Directive (AD) 2023-23- 06, which applied to certain Dassault Aviation Model FALCON 2000EX airplanes.
in 34 days Federal Register → -
027
Airworthiness Directives; Dassault Aviation Airplanes
Prior state superseding Airworthiness Directive (AD) 2023-22- 12, which applied to all Dassault Aviation Model FALCON 2000 airplanes.
in 34 days Federal Register →
Cite this view
Every final rule amending 14 CFR Part 39, Airworthiness Directives, recorded by effective date across 2 months and 2 agencies. Rules whose date has passed are kept: they are what the part now says. Figures read 12 September 2026. Cite the read date with the figure: the window moves as rules are published and amended.
14 CFR Part 39: Airworthiness Directives - Luminory. Luminory federal effective-date record, 27 records, read 12 September 2026. https://luminory.org/cfr/14-39/Luminory. (2026). 14 CFR Part 39: Airworthiness Directives - Luminory [Data set]. Derived from the U.S. Federal Register API. https://luminory.org/cfr/14-39/All citation formats · How this is derived · Raw data (CC BY 4.0)