# Airworthiness directives, 1981

FAA airworthiness directives effective in 1981: 189 ADs with their full text, status and the aircraft they apply to.

Page 1 of 4 · 189 ADs

- [AD 81-26-06](https://openairdocs.org/ad/81-26-06.md): Electrical System Modification · Lockheed Martin L-1011-385-1, L-1011-385-1-14, L-1011-385-1-15 and 1 more · Effective Dec 31, 1981
- [AD 81-26-04](https://openairdocs.org/ad/81-26-04.md): Cable Guard & Retainer Installation · M7 Aerospace SA226-AT, SA226-T and SA226-TC · Effective Dec 31, 1981
- [AD 81-24-09](https://openairdocs.org/ad/81-24-09.md): Propeller Performance · Lockheed Martin 188A and 188C · Effective Dec 28, 1981
- [AD 81-04-51 R1](https://openairdocs.org/ad/81-04-51-R1.md): Autothrottle Disengage · Boeing DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83) and 1 more · Effective Dec 28, 1981
- [AD 81-26-02](https://openairdocs.org/ad/81-26-02.md): Stabilizer Spar Tube Structure · Airbus Helicopters SA-360C Dauphin, SA-365C, SA-365C1 and 1 more · Effective Dec 21, 1981
- [AD 81-13-09 R2](https://openairdocs.org/ad/81-13-09-R2.md): Tail Rotor Blades Pitch Horn · Airbus Helicopters AS355E, AS355F, AS350B and 3 more · Effective Dec 18, 1981
- [AD 73-12-03 R1](https://openairdocs.org/ad/73-12-03-R1.md): Engine Mounting Foot Stud · Rolls-Royce Deutschland Dart 542-10, Dart 542-10J and Dart 542-10K · Effective Dec 10, 1981
- [AD 81-25-01](https://openairdocs.org/ad/81-25-01.md): Flyweights · Maule Aerospace Technology M-5-235C and Flyweights · Effective Dec 7, 1981
- [AD 81-13-51](https://openairdocs.org/ad/81-13-51.md): Wheel Brake Assembly · Bombardier CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), CL-600-2B16 (CL-601-3A) and 3 more · Effective Dec 7, 1981
- [AD 81-07-10 R1](https://openairdocs.org/ad/81-07-10-R1.md): Cargo hook operating time recordation · Hughes Helicopters 369 Series · Historical · Effective Nov 30, 1981 · Supersedes AD 81-07-10
- [AD 75-12-09 R2](https://openairdocs.org/ad/75-12-09-R2.md): Inadvertent Structural Failure · Twin Commander 500, 500-A, 500-B and 12 more · Effective Nov 28, 1981
- [AD 81-08-51](https://openairdocs.org/ad/81-08-51.md): Main Landing Gear · Viking Air DHC-7-1, DHC-7-100, DHC-7-101 and 2 more · Effective Nov 25, 1981
- [AD 81-24-06](https://openairdocs.org/ad/81-24-06.md): Engine Driven Fuel Pumps · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 51 more · Effective Nov 23, 1981
- [AD 81-24-02](https://openairdocs.org/ad/81-24-02.md): Hydraulic System Fluid Flow · Gulfstream Aerospace G-1159 and G-1159A · Effective Nov 23, 1981
- [AD 81-24-07](https://openairdocs.org/ad/81-24-07.md): Nose Landing Gear Modification · Piper PA-32R-300, PA-32R-301 (SP), PA-32R-301T and 2 more · Effective Nov 20, 1981
- [AD 81-13-10 R1](https://openairdocs.org/ad/81-13-10-R1.md): Oil Pressure · Continental Motors IO-360-A, IO-360-AB, IO-360-C and 28 more · Effective Nov 20, 1981
- [AD 81-24-04](https://openairdocs.org/ad/81-24-04.md): Icing Conditions · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 1 more · Effective Nov 19, 1981
- [AD 81-24-01](https://openairdocs.org/ad/81-24-01.md): Rudder Control And Harness Cable Assemblies · Piper PA-36-285, PA-36-300 and PA-36-375 · Effective Nov 19, 1981
- [AD 81-06-08](https://openairdocs.org/ad/81-06-08.md): Lower Fuselage Attachment Tab · Piper PA-18-150 · Effective Nov 19, 1981
- [AD 81-24-03](https://openairdocs.org/ad/81-24-03.md): Engine Power Loss Prevention · True Flight Holdings AA-5, AA-5A and AA-5B · Effective Nov 16, 1981
- [AD 81-23-07](https://openairdocs.org/ad/81-23-07.md): Engine Mount Assembly · Piper PA-38-112 · Effective Nov 16, 1981
- [AD 81-23-06](https://openairdocs.org/ad/81-23-06.md): Flap Track Structure · Piper PA-31P, PA-31T and PA-31T1 · Effective Nov 16, 1981
- [AD 76-05-07 R2](https://openairdocs.org/ad/76-05-07-R2.md): Rudder Control System · Piper PA-36-285, PA-36-300 and PA-36-375 · Effective Nov 16, 1981
- [AD 81-20-04 R1](https://openairdocs.org/ad/81-20-04-R1.md): Hamilton Standard Pressurization Controllers · Boeing 727-200 Series, 737-100 Series, 737-200 Series and 7 more · Effective Nov 13, 1981
- [AD 81-20-03](https://openairdocs.org/ad/81-20-03.md): Drive Shaft Support Bearings · Agusta A109A and A109A II · Effective Nov 12, 1981
- [AD 81-14-03 R1](https://openairdocs.org/ad/81-14-03-R1.md): Tailboom Frame 28 · British Aerospace Argosy AW.650 Series 101 · Effective Nov 12, 1981
- [AD 81-12-06 R1](https://openairdocs.org/ad/81-12-06-R1.md): Magnetos · Bendix Magnetos, LTIO-540-J2BD and TIO-540-J2BD · Effective Nov 12, 1981
- [AD 81-23-04](https://openairdocs.org/ad/81-23-04.md): Main Gearbox Overhaul · Sikorsky S-76A · Effective Nov 9, 1981
- [AD 81-22-01](https://openairdocs.org/ad/81-22-01.md): Slat Control Valve Assembly · Boeing DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83) and 1 more · Effective Nov 5, 1981
- [AD 81-21-01](https://openairdocs.org/ad/81-21-01.md): Erc Cargo Hook Assemblies · Airbus Helicopters SA.315B Alouette III · Effective Nov 4, 1981
- [AD 81-22-03](https://openairdocs.org/ad/81-22-03.md): Elevator Torque Tube · Viking Air DHC-6-1, DHC-6-100, DHC-6-200 and 1 more · Effective Nov 2, 1981
- [AD 81-22-02](https://openairdocs.org/ad/81-22-02.md): Elevator Outer Torque Tube · Kelowna Flightcraft R & D 340, 440, Military C-131B and 3 more · Effective Oct 29, 1981
- [AD 81-16-06 R1](https://openairdocs.org/ad/81-16-06-R1.md): Generator Operation · Boeing DC-10-10, DC-10-10F, DC-10-15 and 6 more · Effective Oct 26, 1981
- [AD 81-12-51](https://openairdocs.org/ad/81-12-51.md): Rudder Close Tolerance Bolt · Flug- und Fahrzeugwerke Diamant 16.5 and HBV Diamant · Effective Oct 22, 1981
- [AD 81-21-05](https://openairdocs.org/ad/81-21-05.md): Battery Packs · Artex Aircraft Supplies Battery Packs · Effective Oct 19, 1981
- [AD 81-21-03](https://openairdocs.org/ad/81-21-03.md): Wing Leading Edge Access Doors · 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 Oct 18, 1981
- [AD 81-08-01 R1](https://openairdocs.org/ad/81-08-01-R1.md): Brake System Check · Lockheed Martin L-1011-385-1, L-1011-385-1-14, L-1011-385-1-15 and 1 more · Effective Oct 18, 1981
- [AD 81-19-06](https://openairdocs.org/ad/81-19-06.md): Seat Belt Attachments · Dassault Falcon 10 · Effective Oct 14, 1981
- [AD 67-25-01 R1](https://openairdocs.org/ad/67-25-01-R1.md): Main Undercarriage Down Lock Jacks · Airbus BAC 1-11 200 Series and BAC 1-11 400 Series · Effective Oct 14, 1981
- [AD 81-21-06](https://openairdocs.org/ad/81-21-06.md): Main Rotor Heads · Airbus Helicopters SA330F, SA330G and SA330J · Effective Oct 12, 1981
- [AD 81-21-04](https://openairdocs.org/ad/81-21-04.md): Main Rotor Scissors Assembly · Sikorsky S-76A · Effective Oct 8, 1981
- [AD 81-11-02 R1](https://openairdocs.org/ad/81-11-02-R1.md): Oil Drain Valves · Piper PA-28R-200, PA-28R-201 and PA-28RT-201 · Effective Oct 2, 1981
- [AD 81-19-02](https://openairdocs.org/ad/81-19-02.md): Main Rotor Yoke · Bell Helicopter Textron 204B, 205A, 205A-1 and 1 more · Historical · Effective Sep 30, 1981 · Replaced by AD 2012-17-08
- [AD 81-19-01](https://openairdocs.org/ad/81-19-01.md): Main Rotor Yoke · Bell Helicopter Textron 212 · Historical · Effective Sep 30, 1981 · Replaced by AD 2012-17-08
- [AD 81-19-05](https://openairdocs.org/ad/81-19-05.md): Thrust Reversers · Boeing DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83) and 1 more · Effective Sep 28, 1981
- [AD 80-25-07 R1](https://openairdocs.org/ad/80-25-07-R1.md): Oil Coolers · American Champion 7ECA, 7GCAA, 7GCBC and 39 more · Effective Sep 24, 1981
- [AD 81-18-01](https://openairdocs.org/ad/81-18-01.md): Main Rotor Trunnions · Bell Helicopter Textron 206A, 206A-1 (OH-58A), 206B and 3 more · Historical · Effective Sep 22, 1981 · Replaced by AD 81-18-01 R1
- [AD 81-19-08](https://openairdocs.org/ad/81-19-08.md): Low Pressure Turbine Rotor Stage 2 Disks · General Electric CF6-6D, CF6-6D1, CF6-6D1A and 2 more · Effective Sep 21, 1981
- [AD 81-07-51 R1](https://openairdocs.org/ad/81-07-51-R1.md): Main Rotor Spindles · Sikorsky S-76A · Effective Sep 21, 1981
- [AD 81-19-07](https://openairdocs.org/ad/81-19-07.md): Air Flow Multiplier · Boeing 727-100 Series, 727-100C Series, 727-200 Series and 3 more · Effective Sep 20, 1981

Next page: https://openairdocs.org/ad.md?year=1981&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)) = 1981
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=1981

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