# Airworthiness directives, 1973

FAA airworthiness directives effective in 1973: 96 ADs with their full text, status and the aircraft they apply to.

Page 1 of 2 · 96 ADs

- [AD 73-26-03](https://openairdocs.org/ad/73-26-03.md): Fuel Control Drive · Honeywell International TSE331-3U · Effective Dec 28, 1973
- [AD 73-26-08](https://openairdocs.org/ad/73-26-08.md): Roll and Pitch Servo Clamps · Textron 95-55, 95-A55, 95-B55 and 5 more · Effective Dec 26, 1973
- [AD 73-26-05](https://openairdocs.org/ad/73-26-05.md): Generators · Scott Chemical Oxygen Generators · Effective Dec 20, 1973
- [AD 73-26-04](https://openairdocs.org/ad/73-26-04.md): Nose Cowl Attach Bolts · Boeing DC-10-10, DC-10-30 and DC-10-30F (KC-10A, KDC-10) · Effective Dec 19, 1973
- [AD 73-25-05](https://openairdocs.org/ad/73-25-05.md): Float Support Structure · Viking Air DHC-2 Mk.I · Effective Dec 14, 1973
- [AD 69-13-03](https://openairdocs.org/ad/69-13-03.md): Heater Exhaust Tube · Piper PA-23, PA-23-160, PA-23-235 and 3 more · Historical · Effective Dec 14, 1973 · Replaced by AD 2017-15-05
- [AD 73-25-01](https://openairdocs.org/ad/73-25-01.md): Heater Fuel Pump Relay Relocation · Cessna 310I · Effective Dec 10, 1973
- [AD 73-11-02](https://openairdocs.org/ad/73-11-02.md): Main Landing Gear Support Structure · Piper PA-34-200 · Effective Dec 3, 1973
- [AD 73-22-02](https://openairdocs.org/ad/73-22-02.md): Wing Lift Struts · Aircraft Parts & Development A-9, A-9A and A-9B · Effective Nov 20, 1973
- [AD 73-24-01](https://openairdocs.org/ad/73-24-01.md): Control Surface Hinge Failure · Commander 112 · Effective Nov 19, 1973
- [AD 73-23-07](https://openairdocs.org/ad/73-23-07.md): Defective Spar Attachment Fittings · Cessna 150, 150A, 150B and 68 more · Effective Nov 19, 1973
- [AD 73-23-06](https://openairdocs.org/ad/73-23-06.md): Throttle Control Cable · Textron 19A, 23, A23-19 and 4 more · Effective Nov 19, 1973
- [AD 73-21-03](https://openairdocs.org/ad/73-21-03.md): Vertical Fin Support Forgings · Bell Helicopter Textron Canada 206A and 206B · Effective Nov 15, 1973
- [AD 73-23-03](https://openairdocs.org/ad/73-23-03.md): Flexible Induction Air Ducts · Textron 19A, 23, A23 and 8 more · Effective Nov 13, 1973
- [AD 73-20-03](https://openairdocs.org/ad/73-20-03.md): Main Rotor Hub · Hiller UH-12, UH-12A, UH-12B and 4 more · Effective Oct 30, 1973
- [AD 73-19-11](https://openairdocs.org/ad/73-19-11.md): Nose Landing Gear Drag Strut · Kelowna Flightcraft R & D 340, 440 and Military C-131E · Effective Oct 19, 1973
- [AD 73-21-02](https://openairdocs.org/ad/73-21-02.md): Failure of Flex Hose Assemblies · Textron 58, 58A, 95-C55 and 5 more · Effective Oct 12, 1973
- [AD 73-07-04](https://openairdocs.org/ad/73-07-04.md): Magnetos · Bendix Magnetos · Historical · Effective Oct 11, 1973 · Replaced by AD 94-01-03 R2
- [AD 73-21-01](https://openairdocs.org/ad/73-21-01.md): Flight Control Landing Gear Systems · Mooney M20, M20A, M20B and 5 more · Effective Oct 10, 1973
- [AD 73-19-04](https://openairdocs.org/ad/73-19-04.md): Main Rotor Blade Grip · Scotts-Bell 47 47, 47B, 47B3 and 21 more · Effective Oct 10, 1973
- [AD 73-19-03](https://openairdocs.org/ad/73-19-03.md): Nose Gear Actuating System Failure · Mitsubishi Heavy Industries MU-2B, MU-2B-10, MU-2B-15 and 2 more · Effective Oct 8, 1973
- [AD 73-20-08](https://openairdocs.org/ad/73-20-08.md): Tipping · Tarver Propellers 220, F200 and F200-H · Effective Oct 4, 1973
- [AD 73-20-05](https://openairdocs.org/ad/73-20-05.md): Float To Fuselage Bolts · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more · Effective Oct 3, 1973
- [AD 73-20-04](https://openairdocs.org/ad/73-20-04.md): Fuel Pump Boost Electrical Circuit · Cessna R172E · Effective Oct 3, 1973
- [AD 73-19-09](https://openairdocs.org/ad/73-19-09.md): Pitch Link Assemblies · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 1 more · Effective Sep 17, 1973
- [AD 73-19-08](https://openairdocs.org/ad/73-19-08.md): Strap Fittings and Pins · Bell Helicopter Textron Canada 206A, 206A-1 (OH-58A), 206B and 1 more · Effective Sep 15, 1973
- [AD 73-19-07](https://openairdocs.org/ad/73-19-07.md): Turbine Governor-To-Fuel Control Tube · Rolls-Royce 250-C20 · Effective Sep 14, 1973
- [AD 73-15-02](https://openairdocs.org/ad/73-15-02.md): Turbine Case Lug · Pratt & Whitney Division JT3D-1, JT3D-1-MC6, JT3D-1-MC7 and 2 more · Effective Sep 14, 1973
- [AD 73-17-03](https://openairdocs.org/ad/73-17-03.md): Flap Hinge-to-Wing Attachments · de Havilland Aircraft Co., Ltd., The D.H.114 Heron Series 2A, D.H.114 Heron Series 2DA and D.H.114 Heron Series 2X · Effective Sep 13, 1973
- [AD 71-18-04](https://openairdocs.org/ad/71-18-04.md): Main Rotor Blade Spar · Bell Helicopter Textron Canada 206A and 206B · Effective Sep 3, 1973
- [AD 73-18-02](https://openairdocs.org/ad/73-18-02.md): Oxygen Cylinders · Textron BH.125 Series 400A, BH.125 Series 600A, DH.125 Series 1A and 7 more · Effective Aug 28, 1973
- [AD 73-18-01](https://openairdocs.org/ad/73-18-01.md): Nose Landing Gear · Kelowna Flightcraft R & D 340, 440 and Military C-131E · Effective Aug 27, 1973
- [AD 73-17-04](https://openairdocs.org/ad/73-17-04.md): Tail Rotor Grips · Bell Helicopter Textron 204B and 205A-1 · Effective Aug 20, 1973
- [AD 73-17-01](https://openairdocs.org/ad/73-17-01.md): Fuel Transfer Pump Placard · Cessna 170, 170A, 170B and 53 more · Effective Aug 16, 1973
- [AD 73-16-05](https://openairdocs.org/ad/73-16-05.md): Fourth and Fifth Stage Turbine Discs · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 17 more · Effective Aug 15, 1973
- [AD 73-15-03](https://openairdocs.org/ad/73-15-03.md): Leakage of Hot Air into Rear Compartment · Dassault Fan Jet Falcon · Effective Aug 15, 1973
- [AD 73-16-06](https://openairdocs.org/ad/73-16-06.md): Induction Air Box Flapper Door · Aviat S-2A · Effective Aug 13, 1973
- [AD 73-16-03](https://openairdocs.org/ad/73-16-03.md): Landing Gear Cross Tubes · Bell Helicopter Textron 205A-1 · Effective Aug 13, 1973
- [AD 71-24-10](https://openairdocs.org/ad/71-24-10.md): Security of Control Wheel · Textron 35-C33, 35-C33A, 36 and 21 more · Effective Aug 1, 1973
- [AD 73-16-01](https://openairdocs.org/ad/73-16-01.md): Engine Turbine Failure · Sikorsky S-55, S-55B and S-55C with STC SH127WE · Effective Jul 31, 1973
- [AD 73-15-05](https://openairdocs.org/ad/73-15-05.md): Hopper Bay Longerons Cracks · Lavia Argentina PA-25-235 · Effective Jul 27, 1973
- [AD 73-15-01](https://openairdocs.org/ad/73-15-01.md): Rear Fuselage and Pylon Fittings · Sikorsky S-61A, S-61D, S-61E and 2 more · Effective Jul 27, 1973
- [AD 73-12-11](https://openairdocs.org/ad/73-12-11.md): Carburetor Air Box Valve · Textron 19A, 23, A23-19 and 4 more · Effective Jul 27, 1973
- [AD 73-15-04](https://openairdocs.org/ad/73-15-04.md): Rubber Drive Plate Grommet · Lycoming Engines HIO-360-D1A · Effective Jul 23, 1973
- [AD 73-14-05](https://openairdocs.org/ad/73-14-05.md): Autopilot Disconnect Button · Gulfstream Aerospace G-1159 · Effective Jul 12, 1973
- [AD 73-14-03](https://openairdocs.org/ad/73-14-03.md): Landing Gear Shock Strut Piston · Textron 58, 58A, 95-B55 and 7 more · Effective Jul 6, 1973
- [AD 73-12-12](https://openairdocs.org/ad/73-12-12.md): Power Plant Fire Extinguisher · Vickers-Armstrongs Viscount 810 · Effective Jul 6, 1973
- [AD 73-12-10](https://openairdocs.org/ad/73-12-10.md): Dc Power Control Box · British Aerospace Regional H.P. 137 Jetstream Mk. 1 · Effective Jul 6, 1973
- [AD 73-12-07](https://openairdocs.org/ad/73-12-07.md): Nacelle Tubes And End Fittings · Vickers-Armstrongs Viscount 744, Viscount 745D and Viscount 810 · Effective Jul 5, 1973
- [AD 73-14-04](https://openairdocs.org/ad/73-14-04.md): Engine and Prop Controls · Commander 112 · Effective Jul 3, 1973

Next page: https://openairdocs.org/ad.md?year=1973&page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
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)) = 1973
ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESC
```

This list as a web page: https://openairdocs.org/ad?year=1973

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