# Airworthiness directives that may apply: Enstrom F-28

A list on [Enstrom F-28](https://openairdocs.org/model/enstrom-f-28.md).

Matched by model name and maker. Each AD’s applicability may narrow it by serial number, part number or configuration.

- [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 2017-26-03](https://openairdocs.org/ad/2017-26-03.md): Main Rotor System · Effective Jan 4, 2018
- [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 96-06-03](https://openairdocs.org/ad/96-06-03.md): Main Rotor Transmission Clutch Assembly · Effective Apr 23, 1996
- [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 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 74-12-01](https://openairdocs.org/ad/74-12-01.md): Forged Idler Yoke · Effective Sep 4, 1974
- [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 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
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_aircraft_model_directive.parquet' WHERE aircraft_model_code IN ('3300404'))
ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESC
```

This list as a web page: https://openairdocs.org/model/enstrom-f-28/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.