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.
128 orders from 1984 newest first
| Order | In force | Applies to | What it is about | System |
|---|---|---|---|---|
| 84-20-51 | 1984-12-26 | Honeywell International Inc. ATF3-6, ATF3-6A | Exhaust Deflector Liner and Seal Assembly | Engine |
| 84-17-51 | 1984-12-26 | Rolls-Royce Corporation 250-C30, 250-C30S | Turbine Rotor Assembly | Engine |
| 84-10-06 R1 | 1984-12-26 | Honeywell International Inc. TPE331-1, TPE331-10, TPE331-10B, TPE331-10G and 44 more | Fuel Pump Assemblies | Engine |
| 83-11-01 R1 | 1984-12-20 | Airbus Helicopters AS350B, AS350C, AS350D, AS350D1 | Emergency Flotation System | Other and general |
| 84-25-02 | 1984-12-18 | Mitsubishi Heavy Industries, Ltd. MU-2B, MU-2B-10, MU-2B-15, MU-2B-20 and 9 more | Trim Tab Brackets | Flight controls |
| 84-24-04 | 1984-12-17 | BFGoodrich, The Boeing Company Emergency Evacuation Slide/Rafts, 747-100 Series,... and 3 more | Emergency Evacuation Slide/Rafts | Emergency equipment |
| 84-23-07 | 1984-12-15 | Short Brothers PLC SD3-60 | Oil Cooler Air Intake Scoop | Other and general |
| 84-23-05 | 1984-12-15 | The Boeing Company 737-100 Series, 737-200 Series, 737-200C Series, 737-300 Series and 5 more | Horizontal Stabilizer | Airframe structure |
| 84-23-04 | 1984-12-07 | Fokker Services F27 Mark 050, F27 Mark 100, F27 Mark 200, F27 Mark 300 and 4 more | Fokker Service Bulletin F27/26-18, 28-55, 32-143 Inspection | Other and general |
| 84-23-01 | 1984-11-26 | Lockheed Martin Corporation 1329-23A, 1329-23D, 1329-23E, 1329-25 | Hardware, Fasteners | Other and general |
| 84-21-03 | 1984-11-26 | The Boeing Company DC-9-11, DC-9-12, DC-9-13, DC-9-14 and 18 more | Fitting Assembly (Rod End) Inspection | Other and general |
| 84-21-02 | 1984-11-23 | The Boeing Company 747 Series (all) | Structural Integrity | Airframe structure |
| 84-15-07 | 1984-11-23 | Eiriavion Oy PIK-20, PIK-20B, PIK-20D | Rudder Bottom Hinge Bracket | Flight controls |
| 84-22-03 | 1984-11-20 | The Boeing Company DC-9-11, DC-9-12, DC-9-13, DC-9-14 and 14 more | Wing Hinge Studs Inspection | Airframe structure |
| 78-16-02 R1 | 1984-11-15 | Dowty Propellers (c) R.209/4-40-4.5 | Hub | Propeller |
| 84-23-03 | 1984-11-14 | Alexander Schleicher GmbH & Co. ASK 21 | Placard And Afm Changes | Other and general |
| 84-13-51 R1 | 1984-11-14 | Lockheed Martin Corporation L-1011-385-1, L-1011-385-1-14, L-1011-385-1-15, L-1011-385-3 | Fuel System Limitations | Fuel system |
| 84-22-01 | 1984-11-07 | Vickers-Slingsby T.65A Vega | Elevator Malfunction | Flight controls |
| 84-20-04 | 1984-11-05 | de Havilland Aircraft Co., Ltd., The D.H.114 Heron Series 2A, D.H.114 Heron Series 2DA,... | Eyebolt Holes Modification | Other and general |
| 84-20-02 | 1984-11-01 | Cessna Aircraft Company 402C, 404, 414A, 421C and 2 more | Nose Landing Gear | Landing gear |
| 84-12-01 R1 | 1984-10-24 | MD Helicopters, Inc. 369D, 369E | Approved Rotor Blades | Other and general |
| 84-19-07 | 1984-10-22 | Vickers-Armstrongs (Aircraft Limited) Viscount 744, Viscount 745D, Viscount 810 | Hydraulic System | Heating, ice protection and utility systems |
| 84-19-06 | 1984-10-22 | Learjet Inc. 24, 24A, 24B, 24B-A and 21 more | Tab Control System | Other and general |
| 84-19-01 | 1984-10-19 | The Boeing Company 747-100 Series, 747-100B Series, 747-100B SUD Series,... and 8 more | Tension Tie At BS Inspection | Other and general |
| 84-18-05 | 1984-10-15 | Fokker Services F27 Mark 050, F27 Mark 100, F27 Mark 200, F27 Mark 300 and 4 more | Placard/Airspeed Indicators | Instruments and avionics |
| 84-08-04 | 1984-10-15 | Textron Aviation Inc. A36TC, B36TC | Oil Return Line Check Valve | Engine |
| 72-03-03 R3 | 1984-10-15 | Cessna Aircraft Company, Textron Aviation Inc. F150F, F150G, F150H, F150J and 82 more | Wing Flap Actuators Jack Screw | Flight controls |
| 84-20-05 | 1984-10-14 | BH.125 Series 400A, BH.125 Series 600A, DH.125 Series... and 8 more | Landing Gear and Brakes | Landing gear |
| 80-06-04 R1 | 1984-10-14 | The Boeing Company DC-9-11, DC-9-12, DC-9-13, DC-9-14 and 13 more | Main Landing Gear Attach Fittings | Landing gear |
| 84-20-07 | 1984-10-12 | Viking Air Limited DHC-2 Mk.I, DHC-2 Mk.II, DHC-2 Mk.III | Wing Lift Strut Assembly | Landing gear |
| 84-19-05 | 1984-10-08 | Twin Commander Aircraft LLC 690, 690A, 690B, 690C and 3 more | Engine Mount Systems | Engine |
| 84-17-02 | 1984-10-05 | Learjet Inc. 24, 24A, 24B, 24B-A and 6 more | Horizontal Stabilizer Trim Actuator | Flight controls |
| 84-20-01 | 1984-10-01 | Alexander Schleicher GmbH & Co. ASW-15B, ASW -15 | Bellcrank Inspection | Flight controls |
| 84-18-07 | 1984-09-21 | Overland Aviation, Walter Kidde Discharge Cartridges, Discharge Cartridges | Discharge Cartridges | Other and general |
| 84-09-03 | 1984-09-21 | Thrush Aircraft, Inc. S2R-R1820 | Fuselage Upper Longerons | Airframe structure |
| 84-19-08 | 1984-09-20 | Hiller Aviation, Siam Hiller Holdings, Inc. UH-12D, UH-12E, UH-12E-L | Engine Mount | Engine |
| 84-19-03 R1 | 1984-09-20 | Lycoming Engines LTIO-540-V2AD, TIO-540-V2AD | Cylinder Assemblies | Engine |
| 84-13-04 | 1984-09-13 | Alexander Schleicher GmbH & Co. ASW-19, ASW-19B | Horizontal Tailplane Flutter | Other and general |
| 84-12-51 | 1984-09-11 | Westland Helicopters Limited Westland 30 Series 100 | Main Rotor Blade Inspection | Rotorcraft systems |
| 84-09-51 R1 | 1984-09-11 | Lockheed Martin Corporation L-1011-385-1, L-1011-385-1-14, L-1011-385-1-15, L-1011-385-3 | Relief Valve Mount. Adap. | Engine |
| 84-16-02 | 1984-08-23 | Aermacchi S.p.A. S.205 - 18/F, S.205 - 18/R, S.205 - 20/F, S.205 - 20/R and 3 more | Main Landing Gear Long Arm Cross-Member Inspection | Landing gear |
| 84-15-06 | 1984-08-20 | The Boeing Company DC-10-10, DC-10-10F, DC-10-15, DC-10-30 and 5 more | Wiring | Electrical power |
| 82-26-07 R1 | 1984-08-17 | Bell Helicopter Textron, Inc. 214ST | Tailboom Separation | Other and general |
| 78-23-14 R1 | 1984-08-17 | BLANIK LIMITED Blanik L-13, Blanik L-13 AC | Tow Release System | Other and general |
| 84-15-05 | 1984-08-03 | Bell Helicopter Textron, Inc. 214ST | Collective Lever Assembly | Other and general |
| 84-15-04 | 1984-08-03 | Sikorsky Aircraft Corporation S-76A | Tail Rotor Controls | Rotorcraft systems |
| 84-15-03 | 1984-08-03 | Columbia Helicopters, Inc. 234 | Cylinders -Flight Control System | Flight controls |
| 84-08-05 R1 | 1984-08-01 | The Boeing Company 727-100 Series | Pitot-Static Systems | Instruments and avionics |
| 84-15-01 | 1984-07-31 | Avian Balloon Falcon II, Skyhawk, Sparrow | Placard -Tethered Flight | Other and general |
| 84-12-03 | 1984-07-23 | EADS CASA C-212-CB, C-212-CC, C-212-CD, C-212-CE and 3 more | Structural Flight Controls and Fuel System | Fuel system |
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.