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. 20,214 are on file, 291 of them issued as emergencies, 306 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.
775 orders on engine of the 1990s newest first
| Order | In force | Applies to | What it is about | System |
|---|---|---|---|---|
| 99-22-14 | 1999-12-28 | Pratt & Whitney Division, Pratt & Whitney Division JT8D-209, JT8D-217, JT8D-217A, JT8D-217C and 1 more | High Pressure Turbine Shaft | Engine |
| 99-23-20 | 1999-12-27 | The Boeing Company 737-100 Series, 737-200 Series, 737-300 Series, 737-400 Series and 1 more | Transient Suppression Diode | Engine |
| 99-22-10 | 1999-12-27 | General Electric Aircraft Engines CF34-1A, CF34-3A, CF34-3A1, CF34-3A2 | High Pressure Compressor (HPC) Spool and Disk | Engine |
| 98-24-03 R1 | 1999-12-27 | Rolls-Royce Deutschland Ltd & Co KG BR700-710A1-10, BR700-710A2-20 | Combustion Core Fairings | Engine |
| 99-25-13 C1 | 1999-12-23 | The Boeing Company, The Boeing Company 777-200 Series, 777-300 Series | Limitations Section - AFM - Backup Generator Having Sheared Shaft | Engine |
| 99-25-13 | 1999-12-23 | The Boeing Company, The Boeing Company 777-200 Series, 777-300 Series | Limitations Section - Airplane Flight Manual - Backup Generator | Engine |
| 99-23-19 | 1999-12-21 | Learjet Inc. 31, 31A, 35, 35A (C-21A) and 1 more | Spoiler Actuator | Engine |
| 99-24-14 | 1999-12-18 | General Electric Company CF6-80E1A2 | Stage 2 High Pressure Turbine (HPT) Disks | Engine |
| 99-23-12 | 1999-12-17 | 328 Support Services GmbH 328-100 | Co-Pilot Control Cables And Fairleads/Swivel Guides | Engine |
| 99-23-10 | 1999-12-17 | Textron Aviation Inc. Hawker 1000 | PS Wire Bundle | Engine |
| 99-23-09 | 1999-12-17 | Airbus A319-111, A319-112, A319-113, A319-114 and 14 more | Nose Landing Gear Wheel Rotation | Engine |
| 99-23-26 | 1999-12-06 | General Electric Aircraft Engines CF34-1A, CF34-3A, CF34-3A1, CF34-3A2 and 2 more | Main Fuel Control (MFC) | Engine |
| 99-22-08 | 1999-11-30 | The Boeing Company DC-9-11, DC-9-12, DC-9-13, DC-9-14 and 19 more | Pneumatic Augmentation Valve | Engine |
| 99-22-03 | 1999-11-26 | BAE Systems (Operations) Limited ATP | Chafing Within Engine Nacelle | Engine |
| 99-21-31 | 1999-11-24 | Saab AB, Saab Aerosystems SAAB 340B, 340A (SAAB SF340A) | Cam Screws Of Engine Power Levers | Engine |
| 99-20-03 | 1999-11-23 | Pratt & Whitney Division PW2037, PW2037M, PW2040, PW2240 and 1 more | High Pressure Turbine Disks | Engine |
| 99-21-18 | 1999-11-22 | The Boeing Company 767-200 Series, 767-300 Series, 767-300F Series | Thrust Control Cable | Engine |
| 99-21-20 | 1999-11-17 | Dassault Aviation FALCON 2000 | Engine Cowl Hooks | Engine |
| 99-21-19 | 1999-11-17 | Airbus A319-131, A320-232, A320-233, A321-131 and 1 more | Titanium Thrust Links | Engine |
| 99-21-11 | 1999-11-12 | Bombardier Inc. CL-600-2B19 (Regional Jet Series 100) | Inspect Input Connector Of Main Battery Charger And Wire Harness | Engine |
| 99-21-06 | 1999-11-12 | The Boeing Company DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83),... and 1 more | Slat Drive Mechanism Assembly Brackets | Engine |
| 95-04-07 R2 | 1999-11-10 | McDonnell Douglas Corporation, McDonnell Douglas Corporation DC-10-10, DC-10-10F, DC-10-15, DC-10-30 and 1 more | Engine Mount Bolts | Engine |
| 99-21-02 | 1999-11-05 | Short Brothers PLC SD3-30, SD3-60, SD3-60 SHERPA, SD3-SHERPA | Engine Mounting Tube Assembly | Engine |
| 99-18-20 | 1999-11-02 | General Electric Aircraft Engines, General Electric Company CF6-50 Series (all), CF6-80A1, CF6-80A3, CF6-80C2A1 and 5 more | Inadvertent In-flight Thrust Reverser | Engine |
| 99-21-25 | 1999-10-29 | Airbus Helicopters SA.315B Alouette III, SA.316B Alouette III, SA.316C... and 1 more | Main Gear Box Magnetic Plug for Metal Particles Inspection | Engine |
| 99-20-06 | 1999-10-29 | Airbus A320-111, A320-211, A320-212, A320-214 and 3 more | Low Pressure Non-Return Valve | Engine |
| 99-20-04 | 1999-10-29 | Pratt & Whitney Division JT9D-7R4D, JT9D-7R4D1, JT9D-7R4E, JT9D-7R4E1 and 3 more | High Pressure Turbine Disks | Engine |
| 99-19-34 | 1999-10-27 | Bombardier Inc. DHC-8-101, DHC-8-102, DHC-8-103, DHC-8-106 and 3 more | Hydraulic System Components | Engine |
| 99-19-23 | 1999-10-19 | Eurocopter France EC120B | Engine Coupling Tube Inspection | Engine |
| 99-18-22 | 1999-10-08 | Fokker Services F27 Mark Series (all) | High Pressure Cock (HPC) Levers | Engine |
| 99-18-09 | 1999-10-05 | Short Brothers PLC SD3-30 | Autofeather System | Engine |
| 99-17-08 | 1999-10-04 | Pilatus Aircraft Limited, Pilatus Aircraft Limited PC-12, PC-12/45 | Generator | Engine |
| 99-19-01 | 1999-09-30 | Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E, GTSIO-520-F and 126 more | No. 2 and No. 5 Crankshaft Inspections | Engine |
| 99-18-19 | 1999-09-24 | General Electric Company CF6-80A, CF6-80A1, CF6-80A2, CF6-80A3 and 6 more | Inadvertent Thrust Reverser | Engine |
| 99-17-16 | 1999-09-24 | Pratt & Whitney Division PW4050, PW4052, PW4056, PW4060 and 10 more | Airworthiness Directives; Pratt & Whitney PW4000 Series Turbofan Engines | Engine |
| 99-17-02 | 1999-09-17 | The Boeing Company 777-200 Series, 777-300 Series | Safety Spring Wear Plate | Engine |
| 99-15-06 | 1999-09-17 | Honeywell International Inc. ALF502R-3A, ALF502R-5 | Fan Core Inlet Anti-Ice System | Engine |
| 99-18-03 | 1999-09-15 | The Boeing Company, The Boeing Company 747-100B Series, 747-100B SUD Series, 747-200B Series,... and 3 more | Thrust Reverser | Engine |
| 99-15-01 | 1999-09-14 | Pratt & Whitney Division PW4056, PW4152, PW4156A, PW4164 and 2 more | Low Pressure Turbine Disks | Engine |
| 99-14-08 | 1999-09-13 | Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q, JT9D-7Q3 | Airworthiness Directives; Pratt & Whitney JT9D Series Turbofan Engines | Engine |
| 99-15-11 | 1999-09-10 | British Aerospace Regional Aircraft H.P. 137 Jetstream Mk. 1, Jetstream 3201, Jetstream... | NLG Steering Selector Valve | Engine |
| 99-17-09 | 1999-09-07 | Rolls-Royce Corporation, Rolls-Royce Corporation AE 2100A, AE 2100C | Propeller Gearbox (PGB) and Power Section (P/S) Strut Fittings | Engine |
| 99-17-05 | 1999-09-01 | Gulfstream Aerospace LP Astra SPX | Main Fuel Tube Assemblies | Engine |
| 99-15-04 | 1999-08-31 | Piper Aircraft, Inc. PA-46-310P, PA-46-350P | Turbine Inlet Temperature System Calibration | Engine |
| 99-15-03 | 1999-08-31 | Stemme GmbH & Co. KG Stemme S10-VT | Wastegate Control | Engine |
| 99-16-14 | 1999-08-24 | Airbus A300 B2-1A, A300 B2-1C, A300 B2-203, A300 B2K-3C and 17 more | Auto Pilot Systems | Engine |
| 99-16-11 | 1999-08-24 | The Boeing Company 737-600 Series, 737-700 Series, 737-800 Series | Fire Extinguisher Bottles | Engine |
| 99-14-03 | 1999-08-17 | Pilatus Aircraft Limited PC-12, PC-12/45 | Generator Cables | Engine |
| 99-15-02 | 1999-08-16 | Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A, JT9D-7 and 5 more | Airworthiness Directives; Pratt & Whitney JT9D Series Turbofan Engines | Engine |
| 99-15-10 | 1999-08-05 | The Boeing Company 777-200 Series, 777-300 Series | Engine Supply Shutoff Valve | Engine |
Source: FAA airworthiness directives (final rules and emergency directives) from the FAA's Dynamic Regulatory System, as of October 31, 2026. The FAA's text is the authority; this site adds the links to models, engines and the register. Related: aircraft systems · type certificates.