# Proposed AD FAA-2011-1410: Saab AB, Saab Aerosystems Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2012-09-03
- Products: Saab AB, Saab Aerosystems
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 29, 2011, 76 FR 81889
- Comments due: February 13, 2012
- Became: [AD 2012-09-03](https://openairdocs.org/ad/2012-09-03)
- Docket: FAA-2011-1410 (https://www.regulations.gov/docket/FAA-2011-1410, where comments are filed)
- Project: 2011-NM-033-AD
- FR document: 2011-33275
- Official PDF: https://openairdocs.org/files/sha256/ca/39/ca39bc49e419d0cf87ee4f58a639f6a0bd7873d882cd8723653adac8bddefc3c (from https://www.govinfo.gov/content/pkg/FR-2011-12-29/pdf/2011-33275.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/12/29/2011-33275/airworthiness-directives-saab-ab-saab-aerosystems-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D338A750FC1B3F0786257975004F8807.0001
- Page: https://openairdocs.org/proposed/FAA-2011-1410

## Summary

We propose to adopt a new airworthiness directive (AD) for all Saab AB, Saab Aerosystems Model SAAB 2000 airplanes. This proposed AD was prompted by reports of hydraulic accumulator failure. This proposed AD would require replacing certain hydraulic accumulators with stainless steel hydraulic accumulators, and structural modifications in the nose landing gear bay. We are proposing this AD to prevent failure of hydraulic accumulators, which may result in damage to the airplane and injury to occupants.

## Notices in this docket

- Dec 29, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-33275, comments due Feb 13, 2012 (https://www.federalregister.gov/documents/2011/12/29/2011-33275/airworthiness-directives-saab-ab-saab-aerosystems-airplanes)

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