What the FAA has ordered
An airworthiness directive is an order: when the FAA finds an unsafe condition in a design, it tells the owners of every aircraft, engine or propeller of that design what to inspect, repair or replace, and by when. 20,218 are on file, 291 of them issued as emergencies, 310 so far this year. Each one here is linked to the model families and engine series it names, with the number of aircraft on the register today.
20,218 orders newest first
| Order | In force | Applies to | What it is about | System |
|---|---|---|---|---|
| 56-16-04 | Swift Museum Foundation, Inc. GC-1A, GC-1B | Landing Gear Torque Knees | Landing gear | |
| 56-16-03 | Orlando Helicopter Airways, Inc., Sikorsky Aircraft Corporation HRS-1/CH-19, HRS-3/H-19B, S-51, S-55 and 2 more | Main Rotor Blade Inspection | Rotorcraft systems | |
| 56-16-02 | Lockheed Aircraft Corporation 1049-54, 1049B-55 (Navy R7V-1), 1049C-55, 1049D-55 and 10 more | Automatic Pilot Servo Brackets | Flight controls | |
| 56-15-04 | de Havilland Aircraft Co., Ltd., The D.H. 104 Dove Series 1A, D.H. 104 Dove Series 2A, D.H.... and 6 more | Nose Gear Brackets | Landing gear | |
| 56-15-03 | Scotts-Bell 47 Inc 47H-1 | Elevator Control System | Flight controls | |
| 56-15-02 | Scotts-Bell 47 Inc 47, 47B, 47B3, 47D and 20 more | Swashplate Control Ring | Rotorcraft systems | |
| 56-15-01 | Scotts-Bell 47 Inc 47H-1 | Antitorque Control System | Other and general | |
| 56-14-02 | The Boeing Company DC3-G102, DC3-G102A, DC3-G103A, DC3-G202A and 10 more | Landing Gear Axle | Landing gear | |
| 56-13-02 | Sikorsky Aircraft Corporation S-51 | Main Rotor Hub Replacement | Rotorcraft systems | |
| 56-13-01 | The Boeing Company DC-6, DC-6A, DC-6B | Wing Skin And Stringer Inspection | Airframe structure | |
| 56-11-01 | de Havilland Aircraft Co., Ltd., The D.H. 104 Dove Series 1A, D.H. 104 Dove Series 2A, D.H.... and 6 more | Oil Pressure and Temperature Gage | Other and general | |
| 56-09-02 | Martin-Marietta Corporation 202, 202A, 404 | Rudder Torque Tube Rivets | Flight controls | |
| 56-09-01 | Hiller Aviation UH-12, UH-12A, UH-12B, UH-12C | Tail Rotor Torsion Bar | Rotorcraft systems | |
| 56-08-01 | Curtiss-Wright Corporation C632S, C634D, C634S | Pitch Limit Switches | Propeller | |
| 56-06-02 | Pratt & Whitney Division Double Wasp CA15, Double Wasp CA17, Double Wasp CA18,... and 114 more | Cylinder Flange Attaching Stud | Engine | |
| 56-06-01 | Continental Motors E165-2, E165-3, E165-4, E185-1 and 40 more | Piston Pin Assembly | Engine | |
| 56-05-01 | Scotts-Bell 47 Inc 47, 47B, 47B3, 47D and 20 more | Tail Rotor Drive Shafts | Rotorcraft systems | |
| 56-04-02 | Kelowna Flightcraft R & D Ltd. 240 Series, 340 | Fuel Supply Lines | Other and general | |
| 56-04-01 | American Champion Aircraft Corp. 7EC | Control Stick Socket Castings | Other and general | |
| 56-03-03 | Sierra Hotel Aero, Inc. Navion (Army L-17A), Navion A (Army L-17B and L-17C), Navion B | Wing Rear Spar Fitting Inspection | Airframe structure | |
| 56-03-02 | Pratt & Whitney Division Double Wasp CA15, Double Wasp CA17, Double Wasp CA18,... and 7 more | Derichment Valve Cover | Engine | |
| 56-02-03 | Rolls-Royce Deutschland Ltd & Co KG Dart 506, Dart 510 | Compressor Impeller | Engine | |
| 56-02-01 | Twin Commander Aircraft LLC 560-A | Augmentor Tube Support Clamps | Other and general | |
| 56-01-01 | Scotts-Bell 47 Inc 47G, 47G-2 | Ventral Fin Support | Airframe structure | |
| 55-26-02 | Thompson Products, Inc. Fuel Pumps | Fuel Pumps | Engine | |
| 55-26-01 | P. V. Shields A-26B (Army), A-26C (Army) | Fuselage Fuel Tank Modification | Fuel system | |
| 55-25-04 | Orlando Helicopter Airways, Inc., Sikorsky Aircraft Corporation HRS-1/CH-19, HRS-3/H-19B, S-55, S-55B and 1 more | Tail Cone Skin Reinforcements | Airframe structure | |
| 55-25-03 | de Havilland Aircraft Co., Ltd., The D.H. 104 Dove Series 1A, D.H. 104 Dove Series 2A, D.H.... and 6 more | Earth Post Corrosion | Airframe structure | |
| 55-25-02 | de Havilland Aircraft Co., Ltd., The D.H. 104 Dove Series 1A, D.H. 104 Dove Series 2A, D.H.... and 6 more | Front Fin Attachment Brackets | Airframe structure | |
| 55-25-01 | Scotts-Bell 47 Inc 47G | Bellcrank Attachment Bolt | Flight controls | |
| 55-23-03 | Lockheed Aircraft Corporation 1049-54, 1049B-55 (Navy R7V-1), 1049C-55, 1049D-55 and 9 more | Landing Gear Cylinder Assy. | Engine | |
| 55-23-02 | Lockheed Aircraft Corporation 1049C-55, 1049D-55, 1049E-55, 1049G-82 | Outer Wing Main Beam Web | Airframe structure | |
| 55-22-04 | Vickers-Armstrongs (Aircraft Limited) Viscount 745D | Tailplane Main Spar | Airframe structure | |
| 55-22-02 | Univair Aircraft Corporation 415-C, 415-CD, 415-D | Wing Tank Replacements | Airframe structure | |
| 55-22-01 | Textron Aviation Inc. 35, 35-33, 35-A33, 35-B33 and 3 more | Oil Outlet Check Valve | Engine | |
| 55-20-03 | Martin-Marietta Corporation 202, 202A, 404 | Nose Gear Steering Shaft | Landing gear | |
| 55-20-02 | The Boeing Company DC-7, DC-7B, DC-7C | Wing Skin Heat Shields | Airframe structure | |
| 55-19-01 | Hiller Aviation UH-12, UH-12A, UH-12B | Tail Boom Rear Bulkhead | Rotorcraft systems | |
| 55-18-02 | The Boeing Company DC-6, DC-6A, DC-6B | Propeller Reverse Protective Device | Propeller | |
| 55-18-01 | Kelowna Flightcraft R & D Ltd. 240 Series, 340 | Solenoid Operated Throttle Locks | Other and general | |
| 55-17-01 | Lockheed Aircraft Corporation 1049-54, 1049B-55 (Navy R7V-1), 1049C-55, 1049D-55 and 9 more | Flap Torque Tube Bolts | Flight controls | |
| 55-16-02 | Martin-Marietta Corporation 202, 202A, 404 | Fire Resistant Prop. Feathering Lines | Other and general | |
| 55-16-01 | Scotts-Bell 47 Inc 47, 47B, 47B3, 47D and 20 more | Tail Rotor Hub Fillet | Rotorcraft systems | |
| 55-15-06 | Lockheed Aircraft Corporation 1049C-55, 1049D-55, 1049E-55, 149-46 and 5 more | Cooling Air System Rework | Other and general | |
| 55-15-05 | The Boeing Company DC-7, DC-7B, DC-7C | Propeller Feathering Lines | Propeller | |
| 55-15-04 | The Boeing Company DC-6, DC-6A, DC-6B | Propeller Feathering Lines | Propeller | |
| 55-15-02 | Kelowna Flightcraft R & D Ltd. 240 Series, 340 | Propeller Feathering System | Propeller | |
| 55-15-01 | Aero Spacelines, Incorporated 377, 377MG, 377SGT | Propeller Feathering Lines | Propeller | |
| 55-14-01 | Scotts-Bell 47 Inc 47G | Bearing Hanger Support Bracket | Other and general | |
| 55-11-01 | The Boeing Company DC-6, DC-6A, DC-6B, DC-7 and 2 more | Nose Gear Yoke End Fitting | Landing gear |
Source: FAA airworthiness directives (final rules and emergency directives) from the FAA's Dynamic Regulatory System, as of November 9, 2026. The FAA's text is the authority; this site adds the links to models, engines and the register. Related: aircraft systems · type certificates.