Airworthiness directives, 1977

203 ADs took effect in 1977. Every AD since 1946 has a page with its text, status and the registered aircraft it may apply to.

Query with SQL
duckdb -csv -c "SELECT d.ad_number, d.status, d.subject, d.makes, d.models, d.effective_date
  FROM 'https://openairdocs.org/data/latest/faa_directive.parquet' d
  WHERE year(coalesce(d.effective_date, d.publication_date, d.issue_date)) = 1977
  ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

Earlier years
AD 74-20-10Emergency Locator Transmitter · Leigh Systems Emergency Locator TransmitterEffective Dec 30, 1977AD 74-15-06Tail Rotor Gear Box · Sikorsky S-58A, S-58B, S-58BT and 12 moreEffective Dec 30, 1977AD 77-25-04Clevis Pins · Alexander Schleicher Rhonlerche IIEffective Dec 27, 1977AD 77-23-08Cracks in Main Rotor Blades · Schweizer 269A, 269A-1 and 269BEffective Dec 27, 1977AD 77-25-05Idle Mixture · Enstrom Helicopter Corporation, The 280C and F-28CEffective Dec 21, 1977AD 77-12-06HistoricalBlade Shank · Hartzell Propeller BHC-12YF-4, BHC-C2Y, BHC-G2YF-1 and 115 moreEffective Dec 21, 1977 · Replaced by AD 2002-09-08AD 77-13-21Prevent Landing Gear Collapse · Piper PA-24, PA-24-250, PA-24-260 and 3 moreEffective Dec 16, 1977AD 77-25-02Engine Fire Detection System · Sabreliner NA-265-70 and NA-265-80Effective Dec 12, 1977AD 77-23-05Wing or Empennage Assemblies · British Aerospace, Aircraft Group B.206 Series 1 and B.206 Series 2Effective Dec 10, 1977AD 77-23-04Total-Pressure Probes · Dassault Falcon 10Effective Dec 10, 1977AD 77-23-02Propeller Feathering System · BAE Systems HS 748 Series 2AEffective Dec 7, 1977AD 76-21-04High Pressure Compressor · General Electric CF6-6D and CF6-6D1Effective Nov 30, 1977AD 77-24-02Flap Support Structure · Short Brothers SC-7 Skyvan Series 3Effective Nov 28, 1977AD 77-23-11ELT Installation · Cessna 182, 182A, 182B and 16 moreEffective Nov 28, 1977AD 77-22-04Landing Gear · Airbus Helicopters SA341GEffective Nov 28, 1977AD 77-21-09Aileron Rudder Balance Interconnect Mechanism · Lockheed Martin 188A and 188CEffective Nov 25, 1977AD 76-20-03Seal Clearances · Pratt & Whitney Division JT9D-20, JT9D-3A, JT9D-7 and 4 moreEffective Nov 16, 1977AD 77-08-02Electrical Short · Piper PA-31, PA-31-300, PA-31-325 and 3 moreEffective Nov 15, 1977AD 77-23-03Rod End Bearings · Piper PA-28-140, PA-28-151, PA-28-161 and 12 moreEffective Nov 14, 1977AD 77-21-07Wiring · Airbus Helicopters Deutschland BO-105A and BO-105CEffective Nov 14, 1977AD 77-21-01Tail Rotor Gear Boxes · Scotts-Bell 47 47, 47B, 47B3 and 21 moreEffective Nov 14, 1977AD 77-21-05High Pressure Turbine Discs · Rolls-Royce Deutschland Dart 527, Dart 528-7E, Dart 528D-7E and 28 moreEffective Nov 11, 1977AD 77-22-05Operating Limitations · American Champion 7ECA, 7GC, 7GCA and 5 moreEffective Nov 7, 1977AD 77-20-06Wing Strut Corrosion · Pilatus PC-6, PC-6-H1, PC-6-H2 and 11 moreEffective Nov 3, 1977AD 77-22-02Nose Landing Gear Engine Mount · Alexandria 14-19-3, 14-19-3A, 17-30 and 1 moreEffective Nov 2, 1977AD 77-02-01Wing Skin And Spar Cracks · Boeing 707-300 Series, 707-300B Series, 707-300C Series and 1 moreEffective Nov 1, 1977 · Supersedes AD 64-11-01 R7AD 77-22-03Ring Segment - VHF Antenna · Lockheed Martin 1329-23A, 1329-23D, 1329-23E and 1 moreEffective Oct 28, 1977AD 77-21-06Fuselage Steel Tubing Cluster · Lavia Argentina PA-25, PA-25-235 and PA-25-260Effective Oct 19, 1977AD 77-21-03Rudder Spar Cracks · Piper PA-36-285Effective Oct 18, 1977AD 77-20-02Tail Rotor Spindle · Enstrom Helicopter Corporation, The 280, 280C, F-28 and 2 moreEffective Oct 6, 1977AD 76-17-08 R1HistoricalMain Rotor Shaft · Enstrom Helicopter Corporation, The 280, F-28 and F-28AEffective Oct 4, 1977 · Replaced by AD 2001-22-01AD 76-17-08HistoricalMain Rotor Shaft · Enstrom Helicopter Corporation, The 280, F-28 and F-28AEffective Oct 4, 1977 · Replaced by AD 2001-22-01AD 77-18-06Horizontal Stabilizer · Boeing 727-100 Series, 727-100C Series, 727-200 Series and 3 moreEffective Oct 3, 1977AD 77-19-07Control Column Assembly · Textron 18A, 18D, 18S (Army C-45C) and 27 moreEffective Sep 29, 1977AD 77-19-06Aileron Cables · Piper PA-31, PA-31-300, PA-31-325 and 1 moreEffective Sep 27, 1977AD 77-19-03Main Rotor Retention Straps · MD Helicopters 369DEffective Sep 27, 1977AD 77-15-12Power Turbine Coupling Nut · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 23 moreEffective Sep 23, 1977AD 77-19-05Flying Wire Terminals · Allied Ag Cat Productions G-164A, G-164B, G-164B-15T and 3 moreEffective Sep 22, 1977AD 77-18-07Elevator Drive System · Lockheed Martin L-1011-385-1, L-1011-385-1-14, L-1011-385-1-15 and 1 moreEffective Sep 15, 1977AD 74-23-06Operating Limitations · Boeing DC-8-11, DC-8-12, DC-8-21 and 24 moreEffective Sep 15, 1977AD 77-18-05Variable Authority Steering System · M7 Aerospace SA226-AT, SA226-T and SA226-TCEffective Sep 12, 1977AD 77-18-04Cabin Pressurization · Textron 200, 200T, A100 and 3 moreEffective Sep 12, 1977AD 75-24-09Ground Spoilers · Boeing 737-100 Series and 737-200 SeriesEffective Sep 12, 1977AD 77-16-10Navigation Systems · Mitchell Industries Navigation SystemsEffective Sep 8, 1977AD 77-16-07Main Rotor Gearbox · Airbus Helicopters Deutschland BO-105A and BO-105CEffective Sep 6, 1977AD 77-21-04Clutch and Shaft Assembly · MD Helicopters 369, 369A, 369D and 4 moreEffective Aug 31, 1977AD 77-18-01Engine Oil Cooler · Mooney M20E, M20F and M20JEffective Aug 31, 1977AD 77-16-12Low Turbine Shaft · Pratt & Whitney Division JT8D-1, JT8D-11, JT8D-15 and 8 moreEffective Aug 31, 1977AD 77-16-04Wing Structure · de Havilland Aircraft Co., Ltd., The D.H. 104 Dove Series 1A, D.H. 104 Dove Series 2A, D.H. 104 Dove Series 5A and 7 moreEffective Aug 31, 1977AD 77-16-02Pistons · Dowty Propellers (c) R.209/4-40-4.5, (c) R.245/4-40-4.5 and (c) R.259/4-40-4.5Effective Aug 31, 1977