# Airworthiness directives that may apply: Pratt & Whitney PW4650

A list on [Pratt & Whitney PW4650](https://openairdocs.org/engine/pratt-whitney-pw4650.md).

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

- [AD 2016-08-09](https://openairdocs.org/ad/2016-08-09.md): HPC 10th stage disk · Effective Jun 1, 2016
- [AD 2015-22-03](https://openairdocs.org/ad/2015-22-03.md): LPT 4th stage IAS · Effective Dec 1, 2015
- [AD 2012-22-16](https://openairdocs.org/ad/2012-22-16.md): 3rd stage LPT duct segments · Effective Dec 19, 2012
- [AD 2012-14-09](https://openairdocs.org/ad/2012-14-09.md): 3rd and 4th stage vane fractures · Effective Nov 7, 2012
- [AD 2012-18-03](https://openairdocs.org/ad/2012-18-03.md): 1st stage HPT air seal rings · Effective Oct 11, 2012
- [AD 2012-06-18](https://openairdocs.org/ad/2012-06-18.md): Engine · Effective Apr 27, 2012
- [AD 2012-04-04](https://openairdocs.org/ad/2012-04-04.md): fuel metering units (FMUs) · Effective Apr 5, 2012
- [AD 2011-25-09](https://openairdocs.org/ad/2011-25-09.md): PW4000 turbofan engines · Effective Jan 10, 2012
- [AD 2010-24-14](https://openairdocs.org/ad/2010-24-14.md): HPC 10th stage disk · Effective Jan 21, 2011
- [AD 2010-24-09](https://openairdocs.org/ad/2010-24-09.md): No. 3 bearing oil pressure tubes · Effective Dec 28, 2010
- [AD 2005-25-09](https://openairdocs.org/ad/2005-25-09.md): Engine manufacturer's time limits section (TLS) · Effective Jun 12, 2006 · Supersedes AD 2002-03-08
- [AD 2003-19-15](https://openairdocs.org/ad/2003-19-15.md): High-Pressure-Compressor (HPC) Surges · Effective Oct 30, 2003 · Supersedes AD 2003-11-18
- [AD 98-23-08](https://openairdocs.org/ad/98-23-08.md): High Pressure Compressor Blade Tips · Effective Jan 12, 1999
- [AD 2003-11-18](https://openairdocs.org/ad/2003-11-18.md): High-Pressure-Compressor (HPC) · Historical · Effective Jul 7, 2003 · Replaced by AD 2003-19-15
- [AD 2002-21-10](https://openairdocs.org/ad/2002-21-10.md): High pressure compressor (HPC) · Historical · Effective Nov 12, 2002 · Replaced by AD 2003-11-18
- [AD 2002-03-08](https://openairdocs.org/ad/2002-03-08.md): Time Limits Section of Engine Manuals (EM's) · Historical · Effective Apr 16, 2002 · Replaced by AD 2005-25-09
- [AD 2001-25-11](https://openairdocs.org/ad/2001-25-11.md): Compressor Surges · Historical · Effective Jan 17, 2002 · Replaced by AD 2002-21-10
- [AD 2001-15-12](https://openairdocs.org/ad/2001-15-12.md): High Pressure Compressors (HPC) · Historical · Effective Aug 10, 2001 · Replaced by AD 2001-25-11
- [AD 2001-09-07](https://openairdocs.org/ad/2001-09-07.md): High Pressure Compressor (HPC) Surge · Historical · Effective May 14, 2001 · Replaced by AD 2001-15-12
- [AD 2001-08-52](https://openairdocs.org/ad/2001-08-52.md): Multiple-engine power loss due to HPC surges · Historical · Replaced by AD 2001-09-07

## 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 ('51678'))
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/pratt-whitney-pw4650/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.