# Airworthiness directives that may apply: N174AM

A list on [N174AM](https://openairdocs.org/aircraft/N174AM.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 2026-20-03](https://openairdocs.org/ad/2026-20-03.md): Placards and Markings · Effective Nov 5, 2026
- [AD 2026-16-01](https://openairdocs.org/ad/2026-16-01.md): Main rotor drive · Effective Sep 10, 2026
- [AD 2026-14-02](https://openairdocs.org/ad/2026-14-02.md): Indication/Recording System · Effective Aug 14, 2026
- [AD 2026-12-08](https://openairdocs.org/ad/2026-12-08.md): Time Limits/Maintenance Checks · Effective Jul 21, 2026
- [AD 2026-12-03](https://openairdocs.org/ad/2026-12-03.md): Main rotor gearbox · Effective Jul 14, 2026 · Supersedes AD 2025-06-04
- [AD 2026-01-08](https://openairdocs.org/ad/2026-01-08.md): Tail Rotor Drive · Effective Feb 2, 2026 · Supersedes AD 2025-23-52
- [AD 2025-24-06](https://openairdocs.org/ad/2025-24-06.md): Cabin Equipment/Furnishings · Effective Jan 12, 2026
- [AD 2025-18-13](https://openairdocs.org/ad/2025-18-13.md): Engine Controls · Effective Oct 23, 2025 · Supersedes AD 2020-24-07
- [AD 2025-17-14](https://openairdocs.org/ad/2025-17-14.md): Tail Rotor Drive System · Effective Oct 7, 2025
- [AD 2025-17-02](https://openairdocs.org/ad/2025-17-02.md): Emergency Flotation Section · Effective Sep 26, 2025
- [AD 2025-16-08](https://openairdocs.org/ad/2025-16-08.md): Tail Rotor Blades · Effective Sep 22, 2025
- [AD 2025-10-01](https://openairdocs.org/ad/2025-10-01.md): Cabin Equipment/Furnishings · Effective Jul 11, 2025
- [AD 2024-20-07](https://openairdocs.org/ad/2024-20-07.md): Emergency Equipment; Emergency Flotation Section · Effective Dec 5, 2024
- [AD 2023-14-06](https://openairdocs.org/ad/2023-14-06.md): Main Landing Gear Strut, Axle, Truck · Effective Sep 8, 2023
- [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 2022-10-51](https://openairdocs.org/ad/2022-10-51.md): Flight Control System · Emergency AD · Effective Jun 7, 2022
- [AD 2022-01-01](https://openairdocs.org/ad/2022-01-01.md): Main Rotor System · Effective Mar 7, 2022
- [AD 2021-17-17](https://openairdocs.org/ad/2021-17-17.md): Cabin Equipment/Furnishings · Effective Nov 22, 2021
- [AD 2021-19-02](https://openairdocs.org/ad/2021-19-02.md): Rotorcraft flight control · Effective Nov 1, 2021
- [AD 2021-10-25](https://openairdocs.org/ad/2021-10-25.md): Tail rotor blades · Effective Jul 6, 2021
- [AD 2021-09-05](https://openairdocs.org/ad/2021-09-05.md): Rotorcraft Tail Boom · Effective Jun 2, 2021 · Supersedes AD 2016-08-20
- [AD 2021-04-13](https://openairdocs.org/ad/2021-04-13.md): Main Rotor Mast Inner Race Rings · Effective Apr 14, 2021
- [AD 2020-25-11](https://openairdocs.org/ad/2020-25-11.md): Doors · Effective Jan 21, 2021 · Supersedes AD 2014-12-12
- [AD 2020-23-09](https://openairdocs.org/ad/2020-23-09.md): Doors · Effective Dec 24, 2020
- [AD 2020-22-20](https://openairdocs.org/ad/2020-22-20.md): Main Rotor Gearbox · Effective Dec 14, 2020
- [AD 2020-20-14](https://openairdocs.org/ad/2020-20-14.md): Rotorcraft Servo System · Effective Oct 23, 2020
- [AD 2020-12-09](https://openairdocs.org/ad/2020-12-09.md): Tail rotor blade · Effective Jul 28, 2020
- [AD 2020-09-02](https://openairdocs.org/ad/2020-09-02.md): Cabin Equipment/Furnishings · Effective May 29, 2020 · Supersedes AD 2017-16-04
- [AD 2018-25-17](https://openairdocs.org/ad/2018-25-17.md): Air Conditioning System Wiring · Effective Jan 22, 2019
- [AD 2018-02-02](https://openairdocs.org/ad/2018-02-02.md): Main Gearbox Mast · Effective Feb 12, 2018
- [AD 2016-25-20](https://openairdocs.org/ad/2016-25-20.md): Main Rotor Drive System · Effective Jan 31, 2017
- [AD 2015-17-11](https://openairdocs.org/ad/2015-17-11.md): Main Rotor System · Effective Sep 29, 2015
- [AD 2014-20-15](https://openairdocs.org/ad/2014-20-15.md): Rotorcraft Tail Boom · Effective Oct 22, 2014 · Supersedes AD 2012-02-13
- [AD 2013-16-19](https://openairdocs.org/ad/2013-16-19.md): Emergency Flotation Section · Effective Sep 27, 2013
- [AD 2013-07-05](https://openairdocs.org/ad/2013-07-05.md): Window/Windshield System · Effective May 15, 2013
- [AD 2013-05-21](https://openairdocs.org/ad/2013-05-21.md): Cabin vibration damper · Effective Apr 30, 2013
- [AD 2013-01-05](https://openairdocs.org/ad/2013-01-05.md): Starter-Generator · Effective Mar 11, 2013
- [AD 2011-10-12](https://openairdocs.org/ad/2011-10-12.md): Pinion · Effective Jun 22, 2011
- [AD 2011-06-07](https://openairdocs.org/ad/2011-06-07.md): Emergency Flotation Gear · Effective Apr 6, 2011
- [AD 2010-15-03](https://openairdocs.org/ad/2010-15-03.md): Landing Gear System Wiring · Effective Aug 20, 2010
- [AD 2010-06-07](https://openairdocs.org/ad/2010-06-07.md): Rotorcraft Flight Control · Effective Apr 21, 2010
- [AD 2008-06-22](https://openairdocs.org/ad/2008-06-22.md): Twist grip drive · Effective Apr 28, 2008
- [AD 2008-05-16](https://openairdocs.org/ad/2008-05-16.md): Battery overheat sensing circuit · Effective Apr 16, 2008
- [AD 2008-05-15](https://openairdocs.org/ad/2008-05-15.md): Tube-to-flange · Effective Apr 16, 2008
- [AD 2006-10-19](https://openairdocs.org/ad/2006-10-19.md): Throttle twist grip (twist grip) assembly · Effective Jul 27, 2006
- [AD 2005-03-08](https://openairdocs.org/ad/2005-03-08.md): Fuel bleed lever · Effective Mar 21, 2005
- [AD 2004-11-05](https://openairdocs.org/ad/2004-11-05.md): Fuel Transfer Line and Air Exhaust Duct · Effective Jul 9, 2004
- [AD 2004-01-14](https://openairdocs.org/ad/2004-01-14.md): Forward fittings · Effective Jan 26, 2004
- [AD 2003-14-19](https://openairdocs.org/ad/2003-14-19.md): Main servocontrols · Effective Aug 21, 2003
- [AD 2002-03-52](https://openairdocs.org/ad/2002-03-52.md): Adhesive Bead and the Metal Bushing Bonded on Each STARFLEX Star Arm End · Emergency AD · Effective Apr 4, 2002 · Supersedes AD 2002-02-51
- [AD 2025-23-52](https://openairdocs.org/ad/2025-23-52.md): Tail Rotor Drive Shaft · Historical · Effective Dec 8, 2025 · Replaced by AD 2026-01-08
- [AD 2025-06-04](https://openairdocs.org/ad/2025-06-04.md): Main Rotor Gearbox · Historical · Effective May 9, 2025 · Replaced by AD 2026-12-03
- [AD 2022-11-08](https://openairdocs.org/ad/2022-11-08.md): Electrical Power System, Aircraft Fuel System, Hydraulic Power System, Doors, Fuselage Structure, Main Rotor System, Main Rotor Drive System, Tail Rotor System, Tail Rotor Drive System, Rotorcraft Flight Control · Historical · Effective Jul 8, 2022 · Replaced by AD 2026-12-09
- [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 2021-05-02](https://openairdocs.org/ad/2021-05-02.md): Main Rotor System · Historical · Effective Apr 16, 2021
- [AD 2020-24-07](https://openairdocs.org/ad/2020-24-07.md): Engine Control System Wiring · Historical · Effective Jan 12, 2021 · Replaced by AD 2025-18-13
- [AD 2018-26-02](https://openairdocs.org/ad/2018-26-02.md): Engine Control System Wiring · Historical · Effective Jan 30, 2019 · Replaced by AD 2020-24-07
- [AD 2017-16-04](https://openairdocs.org/ad/2017-16-04.md): Cabin Equipment/Furnishings · Historical · Effective Sep 22, 2017 · Replaced by AD 2020-09-02
- [AD 2016-25-19](https://openairdocs.org/ad/2016-25-19.md): Engine controls · Historical · Effective Feb 2, 2017 · Replaced by AD 2018-26-02
- [AD 2016-08-20](https://openairdocs.org/ad/2016-08-20.md): Rotorcraft Tailboom · Historical · Effective Jun 6, 2016 · Replaced by AD 2021-09-05
- [AD 2014-12-51](https://openairdocs.org/ad/2014-12-51.md): Rotorcraft Tailboom · Historical · Effective Aug 20, 2014 · Replaced by AD 2016-08-20
- [AD 2014-12-12](https://openairdocs.org/ad/2014-12-12.md): Emergency Exits · Historical · Effective Aug 4, 2014 · Replaced by AD 2020-25-11
- [AD 2012-02-13](https://openairdocs.org/ad/2012-02-13.md): Rotorcraft Tail Boom · Historical · Effective Feb 22, 2012 · Replaced by AD 2014-20-15
- [AD 2010-21-07](https://openairdocs.org/ad/2010-21-07.md): Engine Control System Wiring · Historical · Effective Nov 18, 2010 · Replaced by AD 2016-25-19
- [AD 2002-02-51](https://openairdocs.org/ad/2002-02-51.md): Metal bushing and the STARFLEX star arm end (arm end) · Historical · Replaced by AD 2002-03-52

## 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 = '8680989')
  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/N174AM/ads

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