# Airworthiness directives: TCDS A20SO A list on [TCDS A20SO](https://openairdocs.org/tcds/A20SO.md). ADs whose products are models on this data sheet, matched by model and maker. Those in force first, newest first. Page 1 of 2 · 83 ADs - [AD 2023-09-09](https://openairdocs.org/ad/2023-09-09.md): Exhaust Turbine System (Recip) · Effective Jul 17, 2023 - [AD 2022-03-15](https://openairdocs.org/ad/2022-03-15.md): Fuel Quantity Indicator · Effective Mar 21, 2022 - [AD 2017-10-20](https://openairdocs.org/ad/2017-10-20.md): Fuselage--Main Bulkhead · Effective Jun 29, 2017 - [AD 2016-08-18](https://openairdocs.org/ad/2016-08-18.md): Engine Fuel and Control · Effective Jun 6, 2016 - [AD 2016-05-01](https://openairdocs.org/ad/2016-05-01.md): Fuselage · Effective Apr 15, 2016 · Supersedes AD 96-12-12 - [AD 2015-24-05](https://openairdocs.org/ad/2015-24-05.md): PLACARDS AND MARKINGS; Interior Placards · Effective Jan 12, 2016 - [AD 2013-10-04](https://openairdocs.org/ad/2013-10-04.md): Engine Exhaust · Effective Jul 17, 2013 · Supersedes AD 82-16-05 R1 - [AD 2009-13-06 R1](https://openairdocs.org/ad/2009-13-06-R1.md): Doors · Effective Nov 3, 2011 · Supersedes AD 2009-13-06 - [AD 2006-03-08](https://openairdocs.org/ad/2006-03-08.md): Vacuum pumps · Effective Mar 10, 2006 - [AD 2005-25-08](https://openairdocs.org/ad/2005-25-08.md): Electronic Flight Information System (EFIS) · Effective Jan 23, 2006 - [AD 2005-18-20](https://openairdocs.org/ad/2005-18-20.md): "FASTprop" propeller de-icers · Effective Oct 14, 2005 - [AD 2004-25-16 R1](https://openairdocs.org/ad/2004-25-16-R1.md): Fuel regulator shutoff valve · Effective Jun 20, 2005 · Supersedes AD 2004-25-16 - [AD 2003-24-07](https://openairdocs.org/ad/2003-24-07.md): Rudder torque tube · Effective Feb 9, 2004 - [AD 2001-06-01](https://openairdocs.org/ad/2001-06-01.md): Elevator Structure · Effective May 8, 2001 · Supersedes AD 70-26-06, AD 76-03-01 - [AD 2000-25-01](https://openairdocs.org/ad/2000-25-01.md): Main Landing Gear Door Hinges · Effective Jan 19, 2001 · Supersedes AD 80-26-05 - [AD 2000-06-06](https://openairdocs.org/ad/2000-06-06.md): Pneumatic Deicing Boots · Effective May 5, 2000 - [AD 98-21-21 R1](https://openairdocs.org/ad/98-21-21-R1.md): Electric Inflatable Door Seals · Effective May 1, 2000 · Supersedes AD 98-21-21 - [AD 99-14-01](https://openairdocs.org/ad/99-14-01.md): AFM - Limitations Section - Icing · Effective Aug 17, 1999 - [AD 99-12-05](https://openairdocs.org/ad/99-12-05.md): Elevator Spar Assembly · Effective Jul 23, 1999 - [AD 99-06-01](https://openairdocs.org/ad/99-06-01.md): Horizontal Stabilizer Rear Spar · Effective Apr 20, 1999 - [AD 98-14-03](https://openairdocs.org/ad/98-14-03.md): Transponders · Effective Aug 16, 1998 - [AD 98-09-25](https://openairdocs.org/ad/98-09-25.md): Lower Spar Splice Plate · Effective Jun 15, 1998 - [AD 98-08-18](https://openairdocs.org/ad/98-08-18.md): Elevator Bungee Spring · Effective May 26, 1998 - [AD 97-16-10](https://openairdocs.org/ad/97-16-10.md): Filters · Effective Sep 18, 1997 - [AD 97-07-03](https://openairdocs.org/ad/97-07-03.md): Nose Wheel Assembly · Effective May 15, 1997 - [AD 96-24-13](https://openairdocs.org/ad/96-24-13.md): Landing Gear Selector Cable · Effective Jan 17, 1997 - [AD 96-21-11](https://openairdocs.org/ad/96-21-11.md): Main Landing Gear Actuator Reinforcement Bracket · Effective Dec 16, 1996 - [AD 96-21-03](https://openairdocs.org/ad/96-21-03.md): Aileron Spar Crack Inspection · Effective Dec 10, 1996 - [AD 96-21-04](https://openairdocs.org/ad/96-21-04.md): Hydraulic Hose Inspection · Effective Dec 10, 1996 - [AD 96-10-14](https://openairdocs.org/ad/96-10-14.md): Main Landing Gear Sidebraces Inspection · Effective Jun 27, 1996 - [AD 96-10-15](https://openairdocs.org/ad/96-10-15.md): Wing Attachments WS 147.5 Inspection · Effective Jun 27, 1996 - [AD 93-24-02 R1](https://openairdocs.org/ad/93-24-02-R1.md): Elevator Control Tube Assembly · Effective Feb 15, 1994 - [AD 93-23-13](https://openairdocs.org/ad/93-23-13.md): Engine Baffle Seals · Effective Jan 21, 1994 - [AD 92-27-05](https://openairdocs.org/ad/92-27-05.md): Aileron Control System · Effective Jan 29, 1993 - [AD 87-21-01](https://openairdocs.org/ad/87-21-01.md): Fuel Filler Openings · Effective Nov 2, 1987 - [AD 85-08-05](https://openairdocs.org/ad/85-08-05.md): Strut Housing Inspection · Effective May 15, 1985 - [AD 82-27-13 R2](https://openairdocs.org/ad/82-27-13-R2.md): Flap Extension System · Effective Aug 18, 1983 - [AD 81-15-03](https://openairdocs.org/ad/81-15-03.md): Engine Inlet Air Filters · Effective Jul 20, 1981 - [AD 80-18-10](https://openairdocs.org/ad/80-18-10.md): Fuel Selector Valves · Effective Sep 8, 1980 - [AD 80-17-06](https://openairdocs.org/ad/80-17-06.md): Placards · Effective Aug 13, 1980 - [AD 80-17-02](https://openairdocs.org/ad/80-17-02.md): Elevator Balance Weights · Effective Aug 8, 1980 - [AD 80-13-06](https://openairdocs.org/ad/80-13-06.md): Air Door Catch Assembly Attachment · Effective Jun 23, 1980 - [AD 79-20-07](https://openairdocs.org/ad/79-20-07.md): Lighter Circuit Breaker · Effective Oct 2, 1979 - [AD 79-14-02](https://openairdocs.org/ad/79-14-02.md): Control Wheel Shaft Stud · Effective Jul 6, 1979 - [AD 79-12-02](https://openairdocs.org/ad/79-12-02.md): Elevator Surface Travel · Effective Jul 2, 1979 - [AD 78-25-03](https://openairdocs.org/ad/78-25-03.md): Hose Assemblies · Effective Jan 15, 1979 - [AD 78-26-11](https://openairdocs.org/ad/78-26-11.md): Elevator Control System · Effective Jan 4, 1979 - [AD 78-05-06](https://openairdocs.org/ad/78-05-06.md): Flexible Fuel Cells · Effective Jun 30, 1978 - [AD 78-08-10](https://openairdocs.org/ad/78-08-10.md): Fuel Selector Lever · Effective Apr 25, 1978 - [AD 77-24-01](https://openairdocs.org/ad/77-24-01.md): Stabilizers and Fins · Effective Apr 17, 1978 Next page: https://openairdocs.org/tcds/A20SO/ads.md?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.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 = 'A20SO') ORDER BY d.status = 'Historical', coalesce(d.effective_date, d.publication_date) DESC ``` This list as a web page: https://openairdocs.org/tcds/A20SO/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.