# Airworthiness directives that may apply: Bell 427

A list on [Bell 427](https://openairdocs.org/model/bell-427.md).

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

- [AD 2025-25-01](https://openairdocs.org/ad/2025-25-01.md): Main Rotor Drive System · Effective Jan 16, 2026
- [AD 2025-13-01](https://openairdocs.org/ad/2025-13-01.md): Main Rotor Blades · Effective Jul 8, 2025
- [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 2021-19-01](https://openairdocs.org/ad/2021-19-01.md): Cabin Equipment/Furnishings · Effective Oct 13, 2021
- [AD 2019-23-09](https://openairdocs.org/ad/2019-23-09.md): Empennage Structure · Effective Jan 10, 2020
- [AD 2016-20-01](https://openairdocs.org/ad/2016-20-01.md): Engine and Transmission Lubrication System · Effective Oct 17, 2016
- [AD 2015-17-02](https://openairdocs.org/ad/2015-17-02.md): Main Rotor Drive System · Effective Sep 24, 2015 · Supersedes AD 2001-13-51
- [AD 2013-18-06](https://openairdocs.org/ad/2013-18-06.md): Main Rotor Control · Effective Oct 17, 2013
- [AD 2012-14-07](https://openairdocs.org/ad/2012-14-07.md): Rotorcraft Servo System · Effective Aug 3, 2012 · Supersedes AD 2011-15-51
- [AD 2012-10-01](https://openairdocs.org/ad/2012-10-01.md): Rotorcraft tailboom · Effective Jun 29, 2012
- [AD 2011-25-01](https://openairdocs.org/ad/2011-25-01.md): Liferafts · Effective Jan 17, 2012
- [AD 2011-03-03](https://openairdocs.org/ad/2011-03-03.md): Tail Rotor Drive · Effective Apr 14, 2011
- [AD 2010-26-51](https://openairdocs.org/ad/2010-26-51.md): Tail rotor blade · Emergency AD · Effective Mar 25, 2011 · Supersedes AD 2009-08-03
- [AD 2009-25-08](https://openairdocs.org/ad/2009-25-08.md): Hydraulic pump driveshaft assembly · Effective Dec 28, 2009
- [AD 2009-22-11](https://openairdocs.org/ad/2009-22-11.md): Swashplate link assembly bearing · Effective Nov 16, 2009
- [AD 2009-15-15](https://openairdocs.org/ad/2009-15-15.md): Vertical Stabilizer, Attach Fittings · Effective Sep 8, 2009
- [AD 2009-07-52](https://openairdocs.org/ad/2009-07-52.md): Cyclic control lever assembly · Emergency AD · Effective May 1, 2009 · Supersedes AD 2009-07-51
- [AD 2003-04-14](https://openairdocs.org/ad/2003-04-14.md): Hydraulic Solenoid Tee Fitting and Tubes · Effective Apr 4, 2003
- [AD 2003-04-12](https://openairdocs.org/ad/2003-04-12.md): Auxiliary Fin Assemblies and Limitations Section of the Rotorcraft Flight Manual (RFM) · Effective Apr 4, 2003
- [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 2011-15-51](https://openairdocs.org/ad/2011-15-51.md): Hydraulic servo actuators · Historical · Effective Nov 14, 2011 · Replaced by AD 2012-14-07
- [AD 2009-08-03](https://openairdocs.org/ad/2009-08-03.md): Tail rotor blade (blade) · Historical · Effective Apr 24, 2009 · Replaced by AD 2010-26-51
- [AD 2009-07-51](https://openairdocs.org/ad/2009-07-51.md): Lever assembly bearing · Historical · Replaced by AD 2009-07-52
- [AD 2007-19-52](https://openairdocs.org/ad/2007-19-52.md): Tail rotor blade (blade) · Historical · Effective Dec 5, 2007 · Replaced by AD 2009-08-03
- [AD 2001-13-51](https://openairdocs.org/ad/2001-13-51.md): Driveshafts · Historical · Effective Oct 9, 2001 · Replaced by AD 2015-17-02

## 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 ('1182207'))
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/bell-427/ads

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