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 |
|---|---|---|---|---|
| 50-25-01 | Univair Aircraft Corporation 108, 108-1, 108-2, 108-3 | Fuel drip strip | Other and general | |
| 50-23-02 | The Boeing Company DC-6, DC-6A, DC-6B | Nose Gear Yoke End Fitting | Landing gear | |
| 50-20-01 | Continental Motors C145-2, C145-2H | Crankcase | Engine | |
| 50-19-02 | Kelowna Flightcraft R & D Ltd. 240 Series | Rudder Flight Tab Balance Weight Brackets | Flight controls | |
| 50-18-03 | Air Associates Safety Belts | Model M-264 Safety Belts | Other and general | |
| 50-18-02 | The Boeing Company DC-6, DC-6A, DC-6B | Engine Operation Placard | Engine | |
| 50-17-02 | Univair Aircraft Corporation 108, 108-1, 108-2, 108-3 | Rudder cable inspection | Flight controls | |
| 50-16-01 | The Boeing Company DC-6, DC-6A, DC-6B | Propeller Reverse Mechanism | Propeller | |
| 50-15-01 | Grumman American Aviation Corporation G-21A (Army OA-9, Navy JRF-1, -2, -3, -4, -5, and -6B) | Mixture Control Rework | Other and general | |
| 50-13-01 | Kelowna Flightcraft R & D Ltd. 240 Series | Aileron Hinge | Flight controls | |
| 50-12-01 | Hamilton Standard, Teledyne Continental Motors Propeller Blades, W670-16, W670-6A, W670-6N | Propeller Blade | Propeller | |
| 50-10-02 | Sierra Hotel Aero, Inc. Navion (Army L-17A), Navion A (Army L-17B and L-17C), Navion B | Air Intake Hose | Other and general | |
| 50-09-01 | The Boeing Company AT-6 (SNJ-2), AT-6A (SNJ-3), AT-6B, AT-6C (SNJ-4) and 1 more | Stabilizer Spar Fittings and Shims | Airframe structure | |
| 50-08-01 | Sikorsky Aircraft Corporation S-51 | Tail Cone Mounting Longerons | Airframe structure | |
| 50-07-01 | Univair Aircraft Corporation 415-C, 415-CD, 415-D | Elevator trim tab stop | Flight controls | |
| 50-06-02 | Boeing Airplane Company, Wichita Division 75 (Army PT-13), A75 (Army PT-13A, -13B, -13C), A75J1... and 8 more | Wing Spar Inspection | Airframe structure | |
| 50-06-01 | Scotts-Bell 47 Inc 47D1 | Ventral Fin Replacement | Airframe structure | |
| 50-05-02 | Textron Aviation Inc., Shakespeare Products Company 35, A35, Push-Pull Controls, Navion (Army L-17A) | Push-Pull Controls | Other and general | |
| 50-04-02 | Superior Aircraft Company V, V-2 | Landing Gear Retraction Motor | Landing gear | |
| 50-04-01 | Briggs & Stratton Corporation Ignition Switches | Ignition Switches | Engine | |
| 50-01-01 | Mooney Mite Aircraft Corporation M-18L | Engine Mount Reinforcement | Engine | |
| 49-52-02 | Scotts-Bell 47 Inc 47B, 47B3, 47D, 47D1 | Main Rotor Hub Inspection | Rotorcraft systems | |
| 49-52-01 | Lockheed Aircraft Corporation 149-46, 49-46, 649-79, 649A-79 and 2 more | Elevator Booster System Rework | Flight controls | |
| 49-50-01 | Continental Motors, Teledyne Continental Motors C-125-1, C-125-2, C145-2, C145-2H and 26 more | Generator Drive Coupling Rubber Disc | Engine | |
| 49-49-01 | Lockheed Aircraft Corporation 49-46 | PB-10 Automatic Pilot | Other and general | |
| 49-48-01 | Textron Aviation Inc. 35, A35 | Thompson Fuel Pump | Fuel system | |
| 49-47-02 | Scotts-Bell 47 Inc 47B, 47B3, 47D, 47D1 | Tail Rotor Drive Shaft | Rotorcraft systems | |
| 49-46-01 | The Boeing Company DC-4, DC-6, DC-6A, DC-6B | Vacuum System Fusible Plug | Heating, ice protection and utility systems | |
| 49-45-02 | Kelowna Flightcraft R & D Ltd. 240 Series | Reverse Lock Solenoid Linkage | Other and general | |
| 49-45-01 | JGS Properties, LLC 11A | Landing Gear bulkhead reinforcement | Landing gear | |
| 49-44-02 | Kelowna Flightcraft R & D Ltd. 240 Series | Horizontal Tail | Airframe structure | |
| 49-43-02 | Don Luscombe Aviation History Foundation, Inc. 8, 8A, 8B, 8C and 4 more | Stabilizer Spar Inspection | Airframe structure | |
| 49-43-01 | Kelowna Flightcraft R & D Ltd. 240 Series | Augmenter Tube | Other and general | |
| 49-41-01 | Lockheed Aircraft Corporation 649-79, 749-79, 749A-79 | Curtiss C632S-A Propeller Hub | Propeller | |
| 49-40-02 | Pratt & Whitney Division Double Wasp CA15, Double Wasp CA18, Double Wasp CA3,... and 1 more | Thrust Plate | Engine | |
| 49-40-01 | JGS Properties, LLC 11A | Trim Tab Horn Attachment | Flight controls | |
| 49-38-02 | The Boeing Company C54-DC, C54A-DC, C54B-DC, C54D-DC and 3 more | Bolt Replacement | Other and general | |
| 49-38-01 | Kelowna Flightcraft R & D Ltd. 240 Series | Nose Gear Landing Struts | Landing gear | |
| 49-34-02 | Scotts-Bell 47 Inc 47D1 | Ventral Fin Inspection | Airframe structure | |
| 49-34-01 | Kelowna Flightcraft R & D Ltd. 240 Series | Cockpit Checklist | Other and general | |
| 49-33-01 | The Boeing Company DC-6, DC-6A, DC-6B | Hamilton Standard Propeller Blades | Propeller | |
| 49-32-01 | Kaiser Fleetwings, Inc. F-401, F-5 | Engine Support Struts | Engine | |
| 49-31-02 | Sky Enterprises, Inc. RC-3 | Fuel Placard | Other and general | |
| 49-31-01 | Textron Aviation Inc. 35, A35 | Emergency Fuel Pump 'O' Rings | Fuel system | |
| 49-30-02 | Kelowna Flightcraft R & D Ltd. 240 Series | Augmenter Vanes | Other and general | |
| 49-30-01 | The Boeing Company, Kelowna Flightcraft R & D Ltd. DC-6, DC-6A, DC-6B, 240 Series | Hub Barrels | Other and general | |
| 49-29-02 | Textron Aviation Inc. D18C, D18C-T, D18S | Rudder Spring Bushings | Flight controls | |
| 49-28-01 | Sierra Hotel Aero, Inc. Navion (Army L-17A), Navion A (Army L-17B and L-17C) | Unsatisfactory Spinner | Propeller | |
| 49-27-03 | The Boeing Company C54-DC, DC-4 | Nose Gear Yoke End And Fittings | Landing gear | |
| 49-27-02 | FS 2002 Corp., FS 2003 Corp. PA-14, PA-12 | Aileron Bellcrank Castings | Flight controls |
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.