# Airworthiness directives: TCDS 1A20 A list on [TCDS 1A20](https://openairdocs.org/tcds/1A20.md). ADs whose products are models on this data sheet, matched by model and maker. Those in force first, newest first. - [AD 2026-13-02](https://openairdocs.org/ad/2026-13-02.md): Navigation · Effective Jul 1, 2026 - [AD 2023-10-02](https://openairdocs.org/ad/2023-10-02.md): Indicating/Recording System, Navigation · Effective May 26, 2023 · Supersedes AD 2021-23-12 - [AD 2011-01-09](https://openairdocs.org/ad/2011-01-09.md): Oxygen · Effective Feb 9, 2011 - [AD 97-25-12](https://openairdocs.org/ad/97-25-12.md): AFM - Limitations Section - Power Levers · Effective Jan 13, 1998 - [AD 91-06-05](https://openairdocs.org/ad/91-06-05.md): Supplemental Inspection Program · Effective Apr 8, 1991 - [AD 89-04-07](https://openairdocs.org/ad/89-04-07.md): Upper Wing Skin · Effective Mar 7, 1989 - [AD 68-01-06 R1](https://openairdocs.org/ad/68-01-06-R1.md): Main Landing Gear Bogie Beam · Effective Sep 5, 1988 - [AD 86-16-10](https://openairdocs.org/ad/86-16-10.md): Lugs - Main Landing Gear · Effective Sep 8, 1986 - [AD 83-24-06](https://openairdocs.org/ad/83-24-06.md): L&R Upper MLG Eye Attachment Pins · Effective Dec 20, 1983 - [AD 83-10-05](https://openairdocs.org/ad/83-10-05.md): Horizontal Stabilizer Rear Attachment Fittings · Effective Jun 6, 1983 - [AD 81-07-05](https://openairdocs.org/ad/81-07-05.md): Nose Landing Gear Crossbeam · Effective Mar 31, 1981 - [AD 71-20-06](https://openairdocs.org/ad/71-20-06.md): Horizontal Stabilizer · Effective Feb 21, 1980 - [AD 79-10-12](https://openairdocs.org/ad/79-10-12.md): Main Landing Gear Actuating System · Effective May 18, 1979 - [AD 79-10-04](https://openairdocs.org/ad/79-10-04.md): Fireproofing · Effective May 9, 1979 - [AD 78-23-05](https://openairdocs.org/ad/78-23-05.md): Spline Wear On Elevator Travel · Effective Nov 10, 1978 - [AD 76-15-05](https://openairdocs.org/ad/76-15-05.md): Nose Landing Gear Bolts · Effective Apr 17, 1978 - [AD 77-17-01](https://openairdocs.org/ad/77-17-01.md): Structural Integrity · Effective Aug 18, 1977 - [AD 77-02-10](https://openairdocs.org/ad/77-02-10.md): Fuselage Bonding Strips · Effective Feb 4, 1977 - [AD 75-24-08](https://openairdocs.org/ad/75-24-08.md): Landing Gear Attach Bolts · Effective Nov 25, 1975 - [AD 75-08-01](https://openairdocs.org/ad/75-08-01.md): Nose Landing Gear · Effective Apr 7, 1975 - [AD 74-05-02](https://openairdocs.org/ad/74-05-02.md): Main Landing Gear Uplock Cylinder · Effective Feb 26, 1974 - [AD 74-04-05](https://openairdocs.org/ad/74-04-05.md): Main Landing Gear Uplock Fitting · Effective Feb 20, 1974 - [AD 74-04-04](https://openairdocs.org/ad/74-04-04.md): Main Landing Gear Attach Fitting · Effective Feb 18, 1974 - [AD 72-21-05](https://openairdocs.org/ad/72-21-05.md): Horizontal Stabilizer · Effective Oct 17, 1972 - [AD 69-12-05](https://openairdocs.org/ad/69-12-05.md): Cracks In Access Cutouts · Effective Jun 27, 1969 - [AD 68-26-03](https://openairdocs.org/ad/68-26-03.md): Stabilizer Rib Cracks · Effective Dec 19, 1968 - [AD 68-10-08](https://openairdocs.org/ad/68-10-08.md): Main Landing Gear Actuator Attach · Effective May 21, 1968 - [AD 67-19-03](https://openairdocs.org/ad/67-19-03.md): Front Spar Web · Effective Jun 10, 1967 - [AD 66-27-04](https://openairdocs.org/ad/66-27-04.md): Main Landing Gear Keel Members · Effective Nov 12, 1966 - [AD 65-04-03](https://openairdocs.org/ad/65-04-03.md): Elevator Antiflutter Gear Box Strut · Effective Feb 4, 1965 - [AD 64-02-04](https://openairdocs.org/ad/64-02-04.md): Control System Couplings · Effective Jan 23, 1964 - [AD 64-01-03](https://openairdocs.org/ad/64-01-03.md): Lubrication Of Sealed Couplings · Effective Jan 4, 1964 - [AD 63-18-01](https://openairdocs.org/ad/63-18-01.md): Elevator Hinge Bolts · Effective Sep 22, 1963 - [AD 63-03-02](https://openairdocs.org/ad/63-03-02.md): Rudder Balance Weight · Effective Feb 6, 1963 - [AD 62-21-01](https://openairdocs.org/ad/62-21-01.md): Oil Temperature Indicating System · Effective Oct 29, 1962 - [AD 62-08-06](https://openairdocs.org/ad/62-08-06.md): Engine Breather Duct Overheat Detectors · Effective Apr 11, 1962 - [AD 61-26-02](https://openairdocs.org/ad/61-26-02.md): Tail Heater Inspection · Effective Dec 21, 1961 - [AD 61-23-02](https://openairdocs.org/ad/61-23-02.md): Elevator Tab Tension Rods · Effective Nov 3, 1961 - [AD 61-22-02](https://openairdocs.org/ad/61-22-02.md): Landing Gear Rotation Lever · Effective Nov 1, 1961 - [AD 61-22-03](https://openairdocs.org/ad/61-22-03.md): Elevator Hinge Fittings · Effective Nov 1, 1961 - [AD 61-21-01](https://openairdocs.org/ad/61-21-01.md): Tail Pipe Door · Effective Oct 17, 1961 - [AD 62-09-02](https://openairdocs.org/ad/62-09-02.md): Oil Line Magnetic Plug And Filter ## 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.effective_date FROM 'https://openairdocs.org/data/latest/faa_directive.parquet' d WHERE d.ad_id IN (SELECT ad_id FROM 'https://openairdocs.org/data/latest/faa_directive_product.parquet' WHERE tcds_number = '1A20') ORDER BY d.status = 'Historical', coalesce(d.effective_date, d.publication_date) DESC ``` This list as a web page: https://openairdocs.org/tcds/1A20/ads --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.