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 77-12-03Engine Mount Stay Strut · de Havilland Aircraft Co., Ltd., The D.H.114 Heron Series 2A, D.H.114 Heron Series 2DA and D.H.114 Heron Series 2XEffective Jul 18, 1977AD 77-09-08Bleed Valve Diaphragm · Rolls-Royce 250-B17, 250-B17B, 250-C20 and 2 moreEffective Jul 18, 1977AD 77-11-03Textron 278Effective Jul 16, 1977AD 77-14-01Main Rotor Flaps · Agusta A109AEffective Jul 15, 1977AD 77-14-07HistoricalBlank Shank · Hartzell Propeller EHC-A3VF with STC SA1685WEEffective Jul 14, 1977 · Replaced by AD 97-18-02AD 77-08-06Engine Oil · Mooney M20E, M20F and M20JEffective Jul 8, 1977AD 77-13-14Drag Brace Fittings · de Havilland Aircraft Co., Ltd., The D.H.114 Heron Series 2A, D.H.114 Heron Series 2DA and D.H.114 Heron Series 2XEffective Jul 7, 1977AD 77-13-13Loss of Rudder Feel Capability · Airbus BAC 1-11 200 Series and BAC 1-11 400 SeriesEffective Jul 7, 1977AD 75-14-04Rudder Cables · Allied Ag Cat Productions G-164, G-164A, G-164B and 4 moreEffective Jul 7, 1977AD 77-13-17Actuating Pins · McCauley Propeller Systems 2A34C, 2AF34C55, 3AF32C75 and 9 moreEffective Jul 6, 1977AD 77-13-16Carburetors · Commander 112TC, 112TCA and CarburetorsEffective Jul 6, 1977AD 77-13-08Right and Left Truss Assemblies · Textron 58P, 58PA, 58TC and 1 moreEffective Jul 1, 1977AD 77-13-07Aileron Control System · Textron 200Effective Jul 1, 1977AD 76-10-01Tail Boom · Bell Helicopter Textron 205A and 205A-1Effective Jul 1, 1977AD 77-13-05Missing Rivets In Bulkhead · Bombardier CL-215-1A10, CL-215-6B11 (CL-215T Variant) and CL-215-6B11 (CL-415 Variant)Effective Jun 29, 1977AD 77-13-04Placard-Brake Warning · Allied Ag Cat Productions G-164A, G-164B, G-164B-15T and 3 moreEffective Jun 29, 1977AD 77-12-08External Electrical Ground Power Receptacle · Cessna 172M, 172N, 177B and 19 moreEffective Jun 27, 1977AD 76-24-01Eighth Stage Compressor Disk · Pratt & Whitney Division JT8D-1, JT8D-11, JT8D-1A and 6 moreEffective Jun 22, 1977AD 77-12-07Fuel Valve Actuator Assembly · Boeing 747-100 Series, 747-100B Series, 747-100B SUD Series and 9 moreEffective Jun 20, 1977AD 77-07-05 R1HistoricalControl Rotor Blade Spar Tube and Cuff · Hiller UH-12, UH-12A, UH-12B and 3 moreEffective Jun 20, 1977 · Replaced by AD 97-10-16AD 77-07-05HistoricalControl Rotor Blade Spar Tube and Cuff · Hiller UH-12, UH-12A, UH-12B and 3 moreEffective Jun 20, 1977 · Replaced by AD 97-10-16AD 76-20-08Main Landing Gear · Lockheed Martin L-1011-385-1, L-1011-385-1-14, L-1011-385-1-15 and 1 moreEffective Jun 17, 1977AD 77-10-03Fire Resistant Prop Feathering System · Lockheed 18Effective Jun 16, 1977AD 77-10-02Fire Resistant Prop Feathering System · Boeing DC3-G102, DC3-G102A, DC3-G103A and 11 moreEffective Jun 16, 1977AD 77-10-01Fire Resistant Prop Feathering System · Boeing C54-DC, C54A-DC, C54B-DC and 4 moreEffective Jun 16, 1977AD 77-11-02Main Rotor · Airbus Helicopters Deutschland BO-105A, BO-105C and BO-105SEffective Jun 14, 1977AD 77-12-02Elevator Balance Weights · Piper PA-31 and PA-31-300 with STC SA986SWEffective Jun 10, 1977AD 77-12-01Fuel System · Piper PA-28-235, PA-32-260, PA-32-300 and 1 moreEffective Jun 10, 1977AD 76-22-02'Y' Type Shoulder Harness · Textron 200, 58, 58A and 14 moreEffective Jun 2, 1977AD 77-10-14Main Landing Gear Actuator · Bombardier CL-215-1A10Effective May 26, 1977AD 77-10-12Crank Arm Assembly · Boeing DC-8-11, DC-8-12, DC-8-21 and 24 moreEffective May 26, 1977AD 77-10-11Landing Gear Lug · Kelowna Flightcraft R & D 240 Series, 340 and 440 with STC SA1054WE or 2 othersEffective May 26, 1977AD 77-08-04Engine Mount Fittings · Textron 58P, 58PA, 58TC and 1 moreEffective May 26, 1977AD 77-10-10Electrical System · Sabreliner NA-265-80Effective May 23, 1977AD 75-13-01Main Rotor Assembly · Sikorsky S-58A, S-58B, S-58BT and 12 moreEffective May 20, 1977AD 77-09-07Hub Driving Center · Dowty Propellers (c) R175/4-30-4/ and (c) R212/4-30-4/Effective May 19, 1977AD 77-10-07Engine-to-Transmission Assembly · Bell Helicopter Textron 205A-1Effective May 18, 1977AD 77-10-09Vibration Effects · Piper PA-31-325Effective May 17, 1977AD 77-10-06Tail Rotor Drive Shaft · Bell Helicopter Textron Canada 206A and 206BEffective May 13, 1977AD 77-09-10Electric Trim Switch · Piper PA-23-250, PA-23-250 (Navy UO-1), PA-24-260 and 6 moreEffective May 12, 1977AD 77-09-06Lower Rudder Bearing · Bombardier CL-215-1A10Effective May 9, 1977AD 77-09-05Nose Landing Gear · Bombardier CL-215-1A10Effective May 9, 1977AD 77-09-04Main Landing Gear Wheel Well · Bombardier CL-215-1A10Effective May 9, 1977AD 77-09-02Windshield Inspection and Repair · Cessna 421B and 421CEffective May 9, 1977AD 77-08-07External Load Release · Airbus Helicopters Deutschland BO-105A and BO-105CEffective May 6, 1977AD 77-09-01Emergency Float Assemblies · MD Helicopters 369HEffective May 3, 1977AD 77-08-05Single Engine Takeoffs · Cessna 337, 337A, 337B and 15 moreEffective Apr 28, 1977AD 77-08-03Static System · True Flight Holdings AA-5A and AA-5BEffective Apr 19, 1977AD 77-08-01Aileron Spar Cracks · Piper PA-24, PA-24-250, PA-24-260 and 3 moreEffective Apr 18, 1977AD 77-07-10Aileron Mass Balance Support Arm · B-N Group BN-2A, BN-2A-2, BN-2A-20 and 10 moreEffective Apr 18, 1977