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FAA orders · 20,218 airworthiness directives on file

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.

713 orders on airframe structure of the 1990s newest first

OrderIn forceApplies toWhat it is aboutSystem
99-24-04 C1 1999-12-27 The Boeing Company DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83),... and 1 more Hi-Lok Pin FastenersAirframe structure
99-24-04 1999-12-27 McDonnell Douglas Corporation DC-9-81, DC-9-82, DC-9-83, DC-9-87 and 1 more Hi-Lok Pin FastenersAirframe structure
99-23-16 1999-12-17 Airbus A330-202, A330-223, A330-301, A330-321 and 8 more Inspect Vertical Flange of Inboard Z-StiffenersAirframe structure
99-23-13 1999-12-17 The Boeing Company 727-200 Series Forward and Aft Frame InspectionAirframe structure
99-23-05 1999-12-17 Bombardier Inc. DHC-8-101, DHC-8-102, DHC-8-103, DHC-8-106 and 5 more Inspect Wing Ladder Plates for CracksAirframe structure
99-23-01 1999-12-08 Robinson Helicopter Company R44 Grip Assembly P/N A756-6 Rev. A thru 7 NAirframe structure
99-22-16 1999-12-07 The Boeing Company 737-100 Series, 737-200 Series, 737-200C Series, 737-300 Series and 5 more Upper Decompression Panel on Flight Deck DoorAirframe structure
99-22-13 1999-12-02 Bell Helicopter Textron Canada Limited 407 Fin Assembly For Reduced Skin Thickness InspectionAirframe structure
99-23-04 1999-11-19 Bell Helicopter Textron, A Division of Textron Canada 222, 222B, 222U Torque Of Vertical Fin Attachment Bolts InspectionAirframe structure
99-23-03 1999-11-19 Bell Helicopter Textron, A Division of Textron Canada 430 Torque Of Vertical Fin Attachment Bolts InspectionAirframe structure
99-21-22 1999-11-17 Short Brothers PLC SD3-30, SD3-60, SD3-60 SHERPA, SD3-SHERPA Corrosion Of Stub Wing Shear Decks And RibsAirframe structure
99-21-10 1999-11-12 The Boeing Company 727-100 Series, 727-100C Series Skin Panels of Lower FuselageAirframe structure
99-21-04 1999-11-05 Airbus A330-301, A340-211, A340-212, A340-311 and 1 more Fuselage Belly Fairing Support StructureAirframe structure
99-21-33 1999-11-04 Fokker Services F27 Mark 050 Inspect Installation Of Countersunk ScrewsAirframe structure
99-21-17 1999-10-28 Airbus A321-111, A321-112, A321-131, A321-211 and 1 more Fuselage StructureAirframe structure
99-19-39 1999-10-27 Bombardier Inc. CL-600-2B19 (Regional Jet Series 100) Emergency Overwing Exit Hatches Insulation BlanketsAirframe structure
99-19-38 1999-10-27 Airbus A310-203, A310-221, A310-222, A310-304 and 3 more Attachment Fittings of No. 3 Wing Spoilers InspectionAirframe structure
99-19-36 1999-10-27 328 Support Services GmbH 328-100 De-Icing TubingAirframe structure
99-20-11 1999-10-21 Burkhart Grob Luft-Und G103 Twin II, G103A Twin II Acro Fastening Nut At Rear Control StickAirframe structure
99-19-29 1999-10-20 The Boeing Company 767-200 Series, 767-300 Series, 767-300F Series Wing Rear SparAirframe structure
99-19-21 1999-10-20 Saab AB, Saab Aerosystems SAAB 340B, 340A (SAAB SF340A) Inspect Fastener Holes Of Horizontal StabilizersAirframe structure
99-18-23 1999-10-08 The Boeing Company MD-90-30 Safe-Life Limited PartsAirframe structure
99-18-06 1999-10-05 ATR - GIE Avions de Transport Régional ATR42-300, ATR42-320 Outer WingAirframe structure
99-18-05 1999-10-05 The Boeing Company 727-100 Series, 727-100C Series, 727-200 Series, 727-200F Series and 2 more Aft Pressure BulkheadAirframe structure
99-17-13 1999-09-24 Lockheed Martin Corporation L-1011-385-1, L-1011-385-1-14, L-1011-385-1-15, L-1011-385-3 Actuator Pins and Bushings of Horizontal StabilizerAirframe structure
99-16-06 1999-09-24 Piper Aircraft Inc. PA-46-350P Wing Attach FittingsAirframe structure
99-17-06 1999-09-22 Airbus A310-203, A310-221, A310-222, A310-304 and 3 more Universal Joint AssembliesAirframe structure
99-17-03 1999-09-16 Bell Helicopter Textron, Inc. 204B, 205A, 205A-1 Tailboom Vertical Fin SparAirframe structure
99-16-07 1999-09-13 Airbus SAS A310-203, A310-204, A310-221, A310-222 and 4 more Inspect Upper Wing-To-Fuselage FairingsAirframe structure
99-15-07 1999-09-10 Viking Air Limited DHC-2 Mk.I, DHC-2 Mk.II, DHC-2 Mk.III Rear Fuselage BulkheadAirframe structure
99-16-04 1999-09-07 Bombardier Inc. CL-215-1A10 Inspect Fuselage Frame-AnglesAirframe structure
99-15-14 1999-08-26 Helicopter Transport Services, Inc. CH-54B Main Gearbox AssemblyAirframe structure
99-16-10 1999-08-24 The Boeing Company 747-400 Series, 747-400D Series, 747-400F Series Satellite Communications (SATCOM) RackAirframe structure
99-16-09 1999-08-24 Bell Helicopter Textron, A Division of Textron Canada 230 Vertical Fin Attachment BoltsAirframe structure
99-15-05 1999-08-18 The Boeing Company DC-9-11, DC-9-12, DC-9-13, DC-9-14 and 14 more Corners Of Aft Lower Cargo DoorjambAirframe structure
99-14-02 1999-08-17 BLANIK LIMITED L33 SOLO Main Wing Attachment and Wing Spar Root PinsAirframe structure
99-14-05 1999-08-04 The Boeing Company 777-200 Series Horizontal and Vertical StabilizerAirframe structure
99-13-08 1999-07-28 Lockheed Aircraft Corporation L-1011-385 Series (all) Rear Spar Of WingAirframe structure
99-14-04 1999-07-14 The Boeing Company 747-300 Series, 747-400 Series, 747-400D Series, 747-400F Series Rack and Fuselage StructureAirframe structure
99-13-12 1999-07-09 Bell Helicopter Textron (Canada), Bell Helicopter... 206L, 206L-1, 206L-3, 206L-4 Tailboom Skin For Cracks InspectionAirframe structure
99-10-16 1999-06-22 Mitsubishi Heavy Industries, Ltd. YS-11 Manhole DoublersAirframe structure
99-11-13 1999-06-21 402C Auxiliary Wing SparsAirframe structure
99-10-01 1999-06-18 Alpha Aviation Concept Limited R2160 Wing Attachment BoltsAirframe structure
99-10-09 1999-06-15 The Boeing Company 747-100 Series, 747-100B Series, 747-100B SUD Series,... and 3 more Wing Front Spar WebAirframe structure
99-09-18 1999-06-08 F.28 Mark 0070, F.28 Mark 0100 Inspect Fuselage Skin Of LH, RH StubwingsAirframe structure
97-15-13 R2 1999-05-28 Textron Aviation Inc. 1900, 1900C, 1900C (C-12J), 1900D Airstair Door Handle and Latch HousingAirframe structure
99-08-22 1999-05-21 The Boeing Company DC-10-10, DC-10-10F, DC-10-15, DC-10-30 and 5 more Rear Spar Cap Of Horizontal StabilizerAirframe structure
99-08-20 1999-05-19 Lockheed Martin Corporation L-1011-385-1, L-1011-385-1-14, L-1011-385-1-15, L-1011-385-3 Bulkhead Fuselage InspectionAirframe structure
99-08-05 R1 1999-05-12 The Boeing Company DC-9-11, DC-9-12, DC-9-13, DC-9-14 and 18 more Fuselage Frames And LongeronsAirframe structure
99-08-04 1999-05-12 Bombardier Inc. DHC-8-100 Series, DHC-8-200 Series, DHC-8-300 Series Flight Compartment DoorAirframe structure

Source: FAA airworthiness directives (final rules and emergency directives) from the FAA's Dynamic Regulatory System, as of November 5, 2026. The FAA's text is the authority; this site adds the links to models, engines and the register. Related: aircraft systems · type certificates.