# Proposed AD FAA-2017-0777: Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2017-22-09
- Products: Saab AB, Saab Aeronautics
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 15, 2017, 82 FR 38621
- Comments due: September 29, 2017
- Became: [AD 2017-22-09](https://openairdocs.org/ad/2017-22-09)
- Docket: FAA-2017-0777 (https://www.regulations.gov/docket/FAA-2017-0777, where comments are filed)
- FR document: 2017-17095
- Official PDF: https://openairdocs.org/files/sha256/72/34/7234691a33589d6f3bd809998f7b0a91235e897b57a8b83baf7d87b53a32cb73 (from https://www.govinfo.gov/content/pkg/FR-2017-08-15/pdf/2017-17095.pdf)
- Federal Register: https://www.federalregister.gov/documents/2017/08/15/2017-17095/airworthiness-directives-saab-ab-saab-aeronautics-formerly-known-as-saab-ab-saab-aerosystems
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0BB53CCF66D9903B8625817D004F2B1F.0001
- Page: https://openairdocs.org/proposed/FAA-2017-0777

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Saab AB, Saab Aeronautics Model SAAB 340B airplanes. This proposed AD was prompted by reports of natural stall events in icing conditions, without prior stall warnings. This proposed AD would require modifying the stall warning system, installing new stall warning computers, and activating the stall warning system. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Aug 15, 2017: Notice of proposed rulemaking (NPRM). (first notice), FR document 2017-17095, comments due Sep 29, 2017 (https://www.federalregister.gov/documents/2017/08/15/2017-17095/airworthiness-directives-saab-ab-saab-aeronautics-formerly-known-as-saab-ab-saab-aerosystems)

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