# Proposed AD FAA-2005-22255: Saab Model SAAB 2000 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2005-23-04
- Products: SAAB
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 1, 2005, 70 FR 52041
- Comments due: October 3, 2005
- Became: [AD 2005-23-04](https://openairdocs.org/ad/2005-23-04)
- Docket: FAA-2005-22255 (https://www.regulations.gov/docket/FAA-2005-22255, where comments are filed)
- Project: 2005-NM-106-AD
- FR document: 05-17404
- Official PDF: https://openairdocs.org/files/sha256/fe/d8/fed881b6acc1fe26cd111d61845a48a44de94c57b8d61d12da8af7765a4ae170 (from https://www.govinfo.gov/content/pkg/FR-2005-09-01/pdf/05-17404.pdf)
- Federal Register: https://www.federalregister.gov/documents/2005/09/01/05-17404/airworthiness-directives-saab-model-saab-2000-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FAF771DB4C4B05328625706F0067E22A.0001
- Page: https://openairdocs.org/proposed/FAA-2005-22255

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Saab Model SAAB 2000 airplanes. This proposed AD would require modifying the manual feather-and-unfeather system for the propellers to make the design of the system more robust. This proposed AD results from reports of in-flight engine shutdown caused by uncommanded operation of the feather pump of the propeller. We are proposing this AD to prevent uncommanded feathering of the propeller, which could result in the shutdown of an engine during flight and consequent reduced controllability of the airplane.

## Notices in this docket

- Sep 1, 2005: Notice of proposed rulemaking (NPRM). (first notice), FR document 05-17404, comments due Oct 3, 2005 (https://www.federalregister.gov/documents/2005/09/01/05-17404/airworthiness-directives-saab-model-saab-2000-airplanes)

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