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 |
|---|---|---|---|---|
| 59-20-04 | The Boeing Company 707-100 Long Body, 707-100B Long Body, 707-100B Short Body | Turbocompressor Engine Bleed Duct Assembly | Engine | |
| 59-20-02 | Lockheed Martin Aeronautics Company 1649A-98 | Fuel Use Placard and Flame Arrestors | Other and general | |
| 59-20-01 | Boeing Defense & Space Group 44A, 44B | Spar Weight Assembly Straps | Airframe structure | |
| 59-19-02 | Boeing Defense & Space Group 44A, 44B | Engine Cooling Fan Assembly | Engine | |
| 59-18-05 | Maryland Air Industries, Inc. F-27, F-27A, F-27B, F-27F and 3 more | Combustion Heater Modification | Heating, ice protection and utility systems | |
| 59-18-04 | Lockheed Aircraft Corporation 1049C-55, 1049D-55, 1049E-55, 1049G-82 and 1 more | Wing Spar Web Reinforcement | Airframe structure | |
| 59-18-03 | Curtiss-Wright Corporation C634S | Power Unit Assembly | Propeller | |
| 59-18-02 | Textron Aviation Inc. C-45G, C-45H, D18S, TC-45G and 1 more | Fuel Line Modification | Fuel system | |
| 59-18-01 | Rolls-Royce Corporation 501-D13, 501-D13A | Low Speed Ground Idle | Engine | |
| 59-17-06 | Helio Aircraft LLC H-391B, H-395 (USAF L-28A or U-10B) | Pulley Guards | Other and general | |
| 59-17-05 | Helio Aircraft LLC H-391B, H-395 (USAF L-28A or U-10B) | Horizontal Tail Spar Fitting | Airframe structure | |
| 59-17-04 | Revo, Incorporated Colonial C-1, Colonial C-2 | Wing Spar Attaching Bolts | Airframe structure | |
| 59-17-02 | The Boeing Company 707-100 Long Body, 707-100B Long Body, 707-100B Short... and 4 more | Purolator Filter | Other and general | |
| 59-17-01 | Curtiss-Wright/Marquette, Inc. Double Row Turbo Cyclone 972TC18DA1 (R-3350-34, -91),... and 7 more | Propeller Shaft | Engine | |
| 59-16-05 | The Boeing Company 707-100 Long Body, 707-100B Long Body, 707-100B Short Body | Utility Hydraulic System | Heating, ice protection and utility systems | |
| 59-16-02 | Air Trading Corporation, Lockheed Aircraft Corporation Army B-34, Navy PV-1, 18 | Stabilizer Spar | Airframe structure | |
| 59-16-01 | Twin Commander Aircraft LLC 500, 520, 560, 560-A and 4 more | Fuel Line Routing | Fuel system | |
| 59-15-02 | Revo, Incorporated Colonial C-1, Colonial C-2 | Aluminum Throttle Control Handle to the Steel Bell Crank | Other and general | |
| 59-14-02 | Mooney Aviation Company Inc M20, M20A | Fuel Selector Valve | Engine | |
| 59-14-01 | The Boeing Company 707-100 Long Body, 707-100B Long Body, 707-100B Short Body | Utility Hydraulic System | Heating, ice protection and utility systems | |
| 59-13-06 | The Boeing Company DC-6A, DC-6B | Lower Front Spar Cap | Airframe structure | |
| 59-13-01 | Rolls-Royce Corporation 501-D13, 501-D13A | Propeller Shaft Roller Bearing | Engine | |
| 59-12-08 | de Havilland Aircraft Co., Ltd., The D.H. 104 Dove Series 1A, D.H. 104 Dove Series 2A, D.H.... and 6 more | Fire Extinguisher Spray Pipe | Other and general | |
| 59-12-07 | Wright Aeronautical Division, Curtiss-Wright Corporation Military Cyclone R-1300 Series | Crankshafts | Engine | |
| 59-12-05 | Revo, Incorporated Colonial C-1, Colonial C-2 | Plastic Control Surface Locks | Other and general | |
| 59-12-03 | Vickers-Armstrongs (Aircraft Limited) Viscount 745D, Viscount 810 | Fire Extinguisher | Other and general | |
| 59-12-02 | Lockheed Aircraft Corporation 1049-54, 1049B-55 (Navy R7V-1), 1049C-55, 1049D-55 and 10 more | Bathtub Fitting | Other and general | |
| 59-12-01 | Maryland Air Industries, Inc. F-27, F-27A, F-27B, F-27F and 3 more | Combustion Heater Inspection | Heating, ice protection and utility systems | |
| 59-11-04 | Vickers-Armstrongs (Aircraft Limited) Viscount 745D | Flap-Aileron Cearance | Flight controls | |
| 59-11-03 | Mooney Aviation Company Inc M20A | Exhaust Heater Inspection | Engine | |
| 59-10-10 | Vickers-Armstrongs (Aircraft Limited) Viscount 745D | Flap Tie Rod Ends | Flight controls | |
| 59-10-09 | Pratt & Whitney Division JT3C-6 | Turbine Blade | Engine | |
| 59-10-07 | Lycoming Engines GO-480-A1A, GO-480-B, GO-480-B1A6, GO-480-B1B and 57 more | Cylinder Baffle Clamps | Engine | |
| 59-10-06 | Kaman Aerospace Corporation K-240 | Wood Check Plate Rotor Blades | Other and general | |
| 59-10-05 | Curtiss-Wright/Marquette, Inc., Hamilton Standard Double Row Turbo Cyclone 981TC18EA1, Double Row Turbo... and 4 more | Governors. | Other and general | |
| 59-10-03 | Cessna Aircraft Company 172, 180, 180A, 182 and 1 more | Flasher Switch | Electrical power | |
| 59-10-01 | The Boeing Company 707-100 Long Body, 707-100B Long Body, 707-100B Short Body | Cabin Sidewalls | Cabin, seats and restraints | |
| 59-09-04 | Boeing Defense & Space Group 44A, 44B | Fan Disc Assembly | Other and general | |
| 59-09-03 | Hartzell Propeller, Inc. HC-82XG-1, HC-82XG-2, HC-82XG-6 | Mounting Bolts | Propeller | |
| 59-08-02 | The Boeing Company 707-100 Long Body, 707-100B Long Body, 707-100B Short Body | Remote Compass System | Other and general | |
| 59-08-01 | Textron Aviation Inc. A35, B35, C35 | Landing Gear Limit Switches | Landing gear | |
| 59-07-02 | L. B. Smith Aircraft Corporation C-46A, C-46D, C-46F | Auxiliary Hydraulic Pump | Heating, ice protection and utility systems | |
| 59-07-01 | Curtiss-Wright Corporation C634S | Rotor Assembly | Propeller | |
| 59-06-08 | Graviner Fire Extinguishers | Automatic Fire Extinguishers | Other and general | |
| 59-06-07 | Vickers-Armstrongs (Aircraft Limited) Viscount 745D | Cockpit Floor Cover Plates | Other and general | |
| 59-06-06 | Vickers-Armstrongs (Aircraft Limited) Viscount 810 | Bearing Channel Reinforcement | Other and general | |
| 59-06-04 | Sierra Hotel Aero, Inc. Navion (Army L-17A), Navion A (Army L-17B and L-17C),... | Hydraulic Actuating Cylinders | Heating, ice protection and utility systems | |
| 59-06-03 | Mooney Aviation Company Inc M20, M20A | Hinge Bearing Brackets | Other and general | |
| 59-06-02 | The Boeing Company DC-7, DC-7B, DC-7C | Landing Gear Orifice Check Valve | Engine | |
| 59-06-01 | Twin Commander Aircraft LLC 500 | Elevator Front Spar | 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.