# Airworthiness directives that may apply: Allison 250-C20F

A list on [Allison 250-C20F](https://openairdocs.org/engine/allison-250-c20f.md).

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

- [AD 2022-10-06](https://openairdocs.org/ad/2022-10-06.md): Turbine Section · Effective Jun 28, 2022 · Supersedes AD 2017-18-14
- [AD 2018-13-01](https://openairdocs.org/ad/2018-13-01.md): Turbine Governor · Effective Aug 16, 2018
- [AD 2006-16-04](https://openairdocs.org/ad/2006-16-04.md): Inspection of the fuel nozzle screen · Effective Sep 7, 2006 · Supersedes AD 2004-24-09
- [AD 2006-13-06](https://openairdocs.org/ad/2006-13-06.md): Gas producer rotor assembly tie bolts · Effective Jul 26, 2006
- [AD 2005-10-13](https://openairdocs.org/ad/2005-10-13.md): Turbine energy absorbing ring · Effective Jun 22, 2005
- [AD 2004-26-09](https://openairdocs.org/ad/2004-26-09.md): Compressor Adaptor Couplings · Effective Feb 8, 2005
- [AD 2001-24-12](https://openairdocs.org/ad/2001-24-12.md): Helical Torquemeter Gearshaft Assembly · Effective Dec 19, 2001 · Supersedes AD 2001-20-51
- [AD 98-24-28](https://openairdocs.org/ad/98-24-28.md): Main Fuel Control Bellows · Effective Jan 7, 1999
- [AD 96-19-01](https://openairdocs.org/ad/96-19-01.md): Superior Air Parts Manufacture Approval (PMA) Bearings · Effective Sep 26, 1996
- [AD 88-17-01](https://openairdocs.org/ad/88-17-01.md): Fuel Controls · Effective Mar 1, 1989
- [AD 83-03-02 R1](https://openairdocs.org/ad/83-03-02-R1.md): Slotted Third Stage Turbine Wheels · Effective Feb 28, 1984
- [AD 82-24-05](https://openairdocs.org/ad/82-24-05.md): Control Assembly and Power Turbine Governor Assembly · Effective Nov 26, 1982
- [AD 77-15-12](https://openairdocs.org/ad/77-15-12.md): Power Turbine Coupling Nut · Effective Sep 23, 1977
- [AD 2017-18-14](https://openairdocs.org/ad/2017-18-14.md): Turbine Section · Historical · Effective Oct 13, 2017 · Replaced by AD 2022-10-06
- [AD 2015-02-22](https://openairdocs.org/ad/2015-02-22.md): Repetitive visual inspections · Historical · Effective Mar 9, 2015 · Replaced by AD 2017-18-14
- [AD 2004-24-09](https://openairdocs.org/ad/2004-24-09.md): Fuel nozzle · Historical · Effective Jan 5, 2005 · Replaced by AD 2006-16-04
- [AD 2001-20-51](https://openairdocs.org/ad/2001-20-51.md): Helical Torquemeter Gearshaft Assembly · Historical · Replaced by AD 2001-24-12

## 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_engine_model_directive.parquet' WHERE engine_model_code IN ('03087'))
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/engine/allison-250-c20f/ads

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