# Airworthiness directives that may apply: N153HT

A list on [N153HT](https://openairdocs.org/aircraft/N153HT.md).

Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.

- [AD 2023-11-07](https://openairdocs.org/ad/2023-11-07.md): Ground Proximity System · Effective Jun 22, 2023 · Supersedes AD 2021-23-13
- [AD 2017-14-06](https://openairdocs.org/ad/2017-14-06.md): Main Rotor Drive System · Effective Aug 25, 2017 · Supersedes AD 93-17-13
- [AD 2015-23-01](https://openairdocs.org/ad/2015-23-01.md): Tail Rotor Drive · Effective Dec 15, 2015
- [AD 2011-12-16](https://openairdocs.org/ad/2011-12-16.md): Rotorcraft Tailboom · Effective Jul 21, 2011 · Supersedes AD 2011-01-52
- [AD 2005-10-12](https://openairdocs.org/ad/2005-10-12.md): Lateral control trim actuator assembly · Effective Jun 2, 2005
- [AD 2000-16-05](https://openairdocs.org/ad/2000-16-05.md): Tail Rotor Swashplate Shaft · Effective Sep 19, 2000 · Supersedes AD 99-17-10
- [AD 99-04-14](https://openairdocs.org/ad/99-04-14.md): Main Rotor Blade · Effective Mar 23, 1999
- [AD 81-17-01](https://openairdocs.org/ad/81-17-01.md): Starting Vibrator Assemblies · Effective Aug 13, 1981
- [AD 2026-04-11](https://openairdocs.org/ad/2026-04-11.md): Engine (Reciprocating) · Effective Apr 8, 2026 · Supersedes AD 2024-21-02
- [AD 2017-16-11](https://openairdocs.org/ad/2017-16-11.md): Reciprocating Engine Power Section · Effective Aug 15, 2017
- [AD 2015-19-07](https://openairdocs.org/ad/2015-19-07.md): Fuel injector fuel lines · Effective Nov 3, 2015 · Supersedes AD 2011-26-04
- [AD 2012-03-06](https://openairdocs.org/ad/2012-03-06.md): Fuel servo diaphragm · Effective Feb 24, 2012 · Supersedes AD 2011-15-10
- [AD 2009-26-12](https://openairdocs.org/ad/2009-26-12.md): Cylinder assemblies · Effective Feb 4, 2010 · Supersedes AD 2008-19-05
- [AD 2009-02-03](https://openairdocs.org/ad/2009-02-03.md): Fuel injection servos · Effective Feb 9, 2009 · Supersedes AD 2008-08-14
- [AD 2006-12-07](https://openairdocs.org/ad/2006-12-07.md): ECi cylinder assemblies · Effective Jul 11, 2006 · Supersedes AD 2005-26-10
- [AD 2004-10-14](https://openairdocs.org/ad/2004-10-14.md): Crankshaft gear · Effective Jun 25, 2004 · Supersedes AD 91-14-22
- [AD 2003-14-03](https://openairdocs.org/ad/2003-14-03.md): Rotary fuel pumps · Effective Aug 14, 2003 · Supersedes AD 98-18-12
- [AD 97-15-11](https://openairdocs.org/ad/97-15-11.md): Cylinder kits · Effective Aug 12, 1997 · Supersedes AD 97-01-03
- [AD 92-12-05](https://openairdocs.org/ad/92-12-05.md): Piston Pins · Effective Jul 10, 1992
- [AD 2021-23-13](https://openairdocs.org/ad/2021-23-13.md): Ground Proximity System · Historical · Effective Dec 9, 2021 · Replaced by AD 2023-11-07
- [AD 2011-01-52](https://openairdocs.org/ad/2011-01-52.md): Rotorcraft Tailboom · Historical · Replaced by AD 2011-12-16
- [AD 99-17-10](https://openairdocs.org/ad/99-17-10.md): Shaft · Historical · Effective Sep 2, 1999 · Replaced by AD 2000-16-05
- [AD 76-18-01](https://openairdocs.org/ad/76-18-01.md): Tail boom support strut · Historical · Effective Sep 7, 1976 · Replaced by AD 2001-25-52
- [AD 2024-21-02](https://openairdocs.org/ad/2024-21-02.md): Engine (Reciprocating) · Historical · Effective Dec 5, 2024 · Replaced by AD 2026-04-11
- [AD 2011-26-04](https://openairdocs.org/ad/2011-26-04.md): Externally mounted fuel injector fuel lines · Historical · Effective Jan 25, 2012 · Replaced by AD 2015-19-07
- [AD 2011-15-10](https://openairdocs.org/ad/2011-15-10.md): Fuel servos · Historical · Effective Aug 16, 2011 · Replaced by AD 2012-03-06
- [AD 2008-19-05](https://openairdocs.org/ad/2008-19-05.md): Parallel Valve'' reciprocating engines · Historical · Effective Oct 20, 2008 · Replaced by AD 2009-26-12
- [AD 2008-14-07](https://openairdocs.org/ad/2008-14-07.md): Externally mounted fuel injector fuel lines · Historical · Effective Aug 14, 2008 · Replaced by AD 2011-26-04
- [AD 2008-08-14](https://openairdocs.org/ad/2008-08-14.md): Fuel injection servo plugs · Historical · Effective Apr 29, 2008 · Replaced by AD 2009-02-03
- [AD 2008-06-51](https://openairdocs.org/ad/2008-06-51.md): Fuel injection servo plugs · Historical · Replaced by AD 2008-08-14
- [AD 2005-26-10](https://openairdocs.org/ad/2005-26-10.md): ECi cylinder assemblies. · Historical · Effective Jan 31, 2006 · Replaced by AD 2006-12-07

## 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, m.matched_by
FROM (
  SELECT ad_id, min(rank) AS rank, arg_min(matched_by, rank) AS matched_by
  FROM (SELECT ad_id, 1 AS rank, 'airframe' AS matched_by FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_directive.parquet' WHERE aircraft_model_code = '8059504'
    UNION ALL SELECT ad_id, 2, 'engine' FROM 'https://openairdocs.org/data/latest/faa_engine_model_directive.parquet' WHERE engine_model_code = '41898')
  GROUP BY ad_id
) m JOIN 'https://openairdocs.org/data/latest/faa_directive.parquet' d USING (ad_id)
ORDER BY d.status = 'Historical', m.rank, coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESC
```

This list as a web page: https://openairdocs.org/aircraft/N153HT/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.