# Airworthiness directives that may apply: N9GP

A list on [N9GP](https://openairdocs.org/aircraft/N9GP.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 2018-02-01](https://openairdocs.org/ad/2018-02-01.md): Main Rotor Head · Effective Feb 21, 2018 · Supersedes AD 2015-08-51
- [AD 2017-26-03](https://openairdocs.org/ad/2017-26-03.md): Main Rotor System · Effective Jan 4, 2018
- [AD 2007-11-02](https://openairdocs.org/ad/2007-11-02.md): Main rotor push-pull control rod (push-pull rod) · Effective Oct 2, 2007
- [AD 2007-16-01](https://openairdocs.org/ad/2007-16-01.md): Main rotor blade retention pin (retention pin) · Effective Aug 15, 2007
- [AD 2002-08-03](https://openairdocs.org/ad/2002-08-03.md): Main Rotor Transmission and Radius of Upper Fillet of Shaft · Effective May 2, 2002 · Supersedes AD 2001-22-01
- [AD 97-20-04](https://openairdocs.org/ad/97-20-04.md): Voltage Regulator and Over-Voltage Relay · Effective Oct 7, 1997
- [AD 96-06-02](https://openairdocs.org/ad/96-06-02.md): Swashplate Bearings · Effective Apr 25, 1996
- [AD 96-06-03](https://openairdocs.org/ad/96-06-03.md): Main Rotor Transmission Clutch Assembly · Effective Apr 23, 1996
- [AD 94-17-15](https://openairdocs.org/ad/94-17-15.md): Main Rotor Feathering Bearing · Effective Sep 15, 1994
- [AD 93-15-10](https://openairdocs.org/ad/93-15-10.md): Composite-Wrapped Main Rotor Shaft · Effective Jan 28, 1994
- [AD 90-17-03](https://openairdocs.org/ad/90-17-03.md): Tail Rotor Drive Shaft Couplings · Effective Sep 7, 1990
- [AD 90-17-02](https://openairdocs.org/ad/90-17-02.md): Tail Rotor Drive Shaft Couplings · Effective Sep 7, 1990
- [AD 90-01-06](https://openairdocs.org/ad/90-01-06.md): Tail Rotor Gearbox · Effective Feb 1, 1990
- [AD 88-11-06](https://openairdocs.org/ad/88-11-06.md): Horizontal Stabilizer · Effective May 31, 1988
- [AD 83-04-04](https://openairdocs.org/ad/83-04-04.md): Main Rotor Gearboxes · Effective Mar 1, 1983
- [AD 82-24-01](https://openairdocs.org/ad/82-24-01.md): Drivebelt Clutch Mechanism · Effective Nov 30, 1982
- [AD 82-16-09](https://openairdocs.org/ad/82-16-09.md): Main Rotor Blade Grips · Effective Aug 4, 1982
- [AD 81-17-01](https://openairdocs.org/ad/81-17-01.md): Starting Vibrator Assemblies · Effective Aug 13, 1981
- [AD 79-07-02](https://openairdocs.org/ad/79-07-02.md): Batteries · Effective Apr 3, 1979
- [AD 77-20-02](https://openairdocs.org/ad/77-20-02.md): Tail Rotor Spindle · Effective Oct 6, 1977
- [AD 75-22-01](https://openairdocs.org/ad/75-22-01.md): Main Rotor System · Effective Jul 1, 1976
- [AD 76-05-11](https://openairdocs.org/ad/76-05-11.md): Tail Cone Attach Bolts · Effective Mar 18, 1976
- [AD 75-22-10](https://openairdocs.org/ad/75-22-10.md): Hub Lock Washer · Effective Oct 28, 1975
- [AD 74-12-01](https://openairdocs.org/ad/74-12-01.md): Forged Idler Yoke · Effective Sep 4, 1974
- [AD 74-17-07](https://openairdocs.org/ad/74-17-07.md): Main Rotor Gear Box · Effective Aug 24, 1974
- [AD 72-11-04](https://openairdocs.org/ad/72-11-04.md): Failure Tail Rotor Drive Pins · Effective Jun 1, 1972
- [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 2015-08-51](https://openairdocs.org/ad/2015-08-51.md): Main Rotor Head · Historical · Effective Jun 2, 2015 · Replaced by AD 2018-02-01
- [AD 2015-04-51](https://openairdocs.org/ad/2015-04-51.md): Main Rotor Head · Historical · Replaced by AD 2015-08-51
- [AD 2001-22-01](https://openairdocs.org/ad/2001-22-01.md): Main Rotor Shaft · Historical · Effective Nov 13, 2001 · Replaced by AD 2002-08-03
- [AD 76-17-08 R1](https://openairdocs.org/ad/76-17-08-R1.md): Main Rotor Shaft · Historical · Effective Oct 4, 1977 · Replaced by AD 2001-22-01
- [AD 76-17-08](https://openairdocs.org/ad/76-17-08.md): Main Rotor Shaft · Historical · Effective Oct 4, 1977 · Replaced by AD 2001-22-01

## 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 = '3300406')
  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/N9GP/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.