# Airworthiness directives, 1971

FAA airworthiness directives effective in 1971: 127 ADs with their full text, status and the aircraft they apply to.

Page 1 of 3 · 127 ADs

- [AD 72-01-01](https://openairdocs.org/ad/72-01-01.md): Engine Flex Hose Assemblies · Alexandria 14-19-2, 14-19-3, 14-19-3A and 1 more · Effective Dec 31, 1971
- [AD 71-26-03](https://openairdocs.org/ad/71-26-03.md): Servo Support Bracket · Sikorsky S-55 and S62A · Effective Dec 30, 1971
- [AD 71-15-02](https://openairdocs.org/ad/71-15-02.md): Flight Deck Roof Panel · Airbus BAC 1-11 200 Series and BAC 1-11 400 Series · Effective Dec 21, 1971
- [AD 71-20-05](https://openairdocs.org/ad/71-20-05.md): Idler Pulley Bearings · Schweizer 269A, 269A-1 and 269B · Effective Dec 18, 1971
- [AD 71-25-08](https://openairdocs.org/ad/71-25-08.md): Inspect Main Rotor Blades · Hiller UH-12, UH-12A, UH-12B and 6 more · Effective Dec 14, 1971
- [AD 71-25-07](https://openairdocs.org/ad/71-25-07.md): Fuel Nozzle Support Assemblies · Pratt & Whitney Division JT8D-1, JT8D-11, JT8D-1A and 3 more · Effective Dec 14, 1971
- [AD 71-25-06](https://openairdocs.org/ad/71-25-06.md): Water At Station 360 Bulkhead · Boeing 707-100 Long Body, 707-100B Long Body, 707-100B Short Body and 7 more · Effective Dec 13, 1971
- [AD 71-25-04](https://openairdocs.org/ad/71-25-04.md): Aileron Control Cables · Sabreliner NA-265, NA-265-20, NA-265-30 and 3 more · Effective Dec 4, 1971
- [AD 71-25-03](https://openairdocs.org/ad/71-25-03.md): Fuel and Oil Restrictor · Textron 19A, A23-24, A23A and 6 more · Effective Dec 3, 1971
- [AD 71-24-09](https://openairdocs.org/ad/71-24-09.md): Airspeed Placard and Indicator Markings · Textron 56TC · Effective Nov 30, 1971
- [AD 71-24-08](https://openairdocs.org/ad/71-24-08.md): Landing Gear Torque Tube · FH1100 Manufacturing FH-1100 · Effective Nov 30, 1971
- [AD 71-08-02](https://openairdocs.org/ad/71-08-02.md): Control Of Speed Brake · Boeing DC-9-11, DC-9-12, DC-9-13 and 19 more · Effective Nov 30, 1971
- [AD 70-22-05](https://openairdocs.org/ad/70-22-05.md): Electrical System Modifications · Piper PA-23-250 (Navy UO-1), PA-30, PA-31 and 1 more · Effective Nov 30, 1971
- [AD 65-21-04](https://openairdocs.org/ad/65-21-04.md): Control Bearing · Hartzell Propeller HC-12X20-7 and HC-12X20-8 · Effective Nov 30, 1971
- [AD 71-24-06](https://openairdocs.org/ad/71-24-06.md): Attach Lug Engine Mount Strut · FH1100 Manufacturing FH-1100 · Effective Nov 26, 1971
- [AD 71-23-02](https://openairdocs.org/ad/71-23-02.md): Attachment Fittings · Gulfstream Aerospace G-159 · Effective Nov 26, 1971
- [AD 71-17-05](https://openairdocs.org/ad/71-17-05.md): Main Rotor Mast · Brantly International B-2, B-2A and B-2B · Effective Nov 26, 1971
- [AD 71-24-02](https://openairdocs.org/ad/71-24-02.md): Failure of Transmission Mount Strut · FH1100 Manufacturing 1100 and FH-1100 · Effective Nov 24, 1971
- [AD 71-24-04](https://openairdocs.org/ad/71-24-04.md): Flexible Hoses In Engine Compartment · Cessna 177, 206, 210D and 28 more · Effective Nov 23, 1971
- [AD 71-08-03](https://openairdocs.org/ad/71-08-03.md): Particle Separation Kit · Bell Helicopter Textron Canada 206A and 206A-1 (OH-58A) · Effective Nov 18, 1971
- [AD 70-25-04](https://openairdocs.org/ad/70-25-04.md): Cracking Of Wing Center Section · Textron 65-90 · Effective Nov 16, 1971
- [AD 71-22-02](https://openairdocs.org/ad/71-22-02.md): Cracks In Nose Gear Fork · Cessna 150, 150A, 150B and 52 more · Effective Nov 9, 1971
- [AD 71-16-02](https://openairdocs.org/ad/71-16-02.md): Rotex Voltage Sensing Unit · Textron DH.125 Series 1A and DH.125 Series 1A-522 · Effective Nov 5, 1971
- [AD 71-21-04](https://openairdocs.org/ad/71-21-04.md): Piston Bearing Lock Pins · Kelowna Flightcraft R & D 340, 440 and Military C-131E · Effective Oct 28, 1971
- [AD 71-20-07](https://openairdocs.org/ad/71-20-07.md): Landing Gear Selector Lever Switch · Airbus BAC 1-11 200 Series and BAC 1-11 400 Series · Effective Oct 22, 1971
- [AD 71-06-01](https://openairdocs.org/ad/71-06-01.md): Faults, Failures and Improper Operation · Textron 99, 99A, 99A (FACH) and 4 more · Effective Oct 19, 1971
- [AD 71-20-03](https://openairdocs.org/ad/71-20-03.md): Relay In Elevator Servodyne Circuit · Sud Caravelle SE 210 Model VIR · Effective Oct 18, 1971
- [AD 71-08-05](https://openairdocs.org/ad/71-08-05.md): Main Gear Drag Strut · Maryland Air Industries F-27, F-27A, F-27B and 9 more · Effective Oct 14, 1971
- [AD 71-21-10](https://openairdocs.org/ad/71-21-10.md): Cockpit Voice Recorder · Microdot Cockpit Voice Recorder · Effective Oct 13, 1971
- [AD 71-21-08](https://openairdocs.org/ad/71-21-08.md): Binding of Fuel Selector Handle · Piper PA-28-140, PA-28-180, PA-28R-180 and 1 more · Effective Oct 13, 1971
- [AD 71-21-07](https://openairdocs.org/ad/71-21-07.md): Loss of AC Power System · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more · Effective Oct 12, 1971
- [AD 71-21-06](https://openairdocs.org/ad/71-21-06.md): Engine Firewall Flex Duct · Piper PA-23-250 (Navy UO-1) · Effective Oct 12, 1971
- [AD 70-26-03](https://openairdocs.org/ad/70-26-03.md): Main Landing Gear Trunnion Support Beam · Boeing 727-100 Series, 727-100C Series, 727-200 Series and 3 more · Effective Oct 8, 1971
- [AD 71-21-03](https://openairdocs.org/ad/71-21-03.md): Link in Servo Valve Input Linkage · Sikorsky S-61A, S-61D, S-61E and 5 more · Effective Oct 7, 1971
- [AD 71-20-04](https://openairdocs.org/ad/71-20-04.md): Lower Fuselage Longeron · American Champion 7ECA, 7GCAA, 7GCBC and 1 more · Effective Sep 30, 1971
- [AD 71-19-02](https://openairdocs.org/ad/71-19-02.md): Hydraulic System · Sud Caravelle SE 210 Model VIR · Effective Sep 27, 1971
- [AD 71-20-02](https://openairdocs.org/ad/71-20-02.md): Emergency Escape Hatches · 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 23, 1971
- [AD 71-19-06](https://openairdocs.org/ad/71-19-06.md): Escape Hatch Lock Check · 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 more · Effective Sep 21, 1971
- [AD 71-19-05](https://openairdocs.org/ad/71-19-05.md): Failure Of Saddle Bracket · Airbus BAC 1-11 200 Series · Effective Sep 20, 1971
- [AD 64-15-03](https://openairdocs.org/ad/64-15-03.md): Flap System Components · Boeing DC-8-11, DC-8-12, DC-8-21 and 24 more · Effective Sep 11, 1971
- [AD 67-02-03](https://openairdocs.org/ad/67-02-03.md): Rear Service Door · Kelowna Flightcraft R & D 340 · Effective Sep 8, 1971
- [AD 71-19-01](https://openairdocs.org/ad/71-19-01.md): Airbrake Bearing Bracket Failure · Alexander Schleicher K 8 and K 8 B · Effective Sep 7, 1971
- [AD 71-07-01](https://openairdocs.org/ad/71-07-01.md): Front Compressor Front Hub · Pratt & Whitney Division JT8D-1, JT8D-1A, JT8D-7 and 1 more · Effective Sep 7, 1971
- [AD 64-09-06](https://openairdocs.org/ad/64-09-06.md): Airbrake Push Pull Rod · Alexander Schleicher K 8, K 8 B, Ka 6 and 15 more · Effective Sep 7, 1971
- [AD 71-18-03](https://openairdocs.org/ad/71-18-03.md): Left Nose Wheel Door Hinge · Wheel well doors (Apache Modification STC SA598SW) · Effective Sep 2, 1971
- [AD 71-09-02](https://openairdocs.org/ad/71-09-02.md): Rudder Hydraulic Support Fitting · Boeing 707-100 Long Body, 707-100B Long Body, 707-100B Short Body and 7 more · Effective Sep 2, 1971
- [AD 71-18-02](https://openairdocs.org/ad/71-18-02.md): Counterweight Assembly · McCauley Propeller Systems 2AF34C55 · Effective Aug 31, 1971
- [AD 71-18-01](https://openairdocs.org/ad/71-18-01.md): Fuel Selector Valve Placard · Cessna 172, 172A, 172B and 16 more · Effective Aug 31, 1971
- [AD 71-17-09](https://openairdocs.org/ad/71-17-09.md): Loose Rudder Fittings · K & L Soaring SGS 1-23H and SGS 1-23H-15 · Effective Aug 26, 1971
- [AD 71-17-08](https://openairdocs.org/ad/71-17-08.md): Rear Engine Stoppage On Take Off · Cessna 337, 337A, 337B and 6 more · Effective Aug 24, 1971

Next page: https://openairdocs.org/ad.md?year=1971&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)) = 1971
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=1971

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