# Proposed AD FAA-2016-9056: Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2016-25-17
- Products: Saab AB,  Saab Aeronautics
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 8, 2016, 81 FR 62024
- Comments due: October 24, 2016
- Became: [AD 2016-25-17](https://openairdocs.org/ad/2016-25-17)
- Docket: FAA-2016-9056 (https://www.regulations.gov/docket/FAA-2016-9056, where comments are filed)
- Project: 2016-NM-007-AD
- FR document: 2016-21165
- Official PDF: https://openairdocs.org/files/sha256/ae/83/ae835e363769fcace8183c7ff2dd1d407358327baa5d121600933fe643361ab0 (from https://www.govinfo.gov/content/pkg/FR-2016-09-08/pdf/2016-21165.pdf)
- Federal Register: https://www.federalregister.gov/documents/2016/09/08/2016-21165/airworthiness-directives-saab-ab-saab-aeronautics-formerly-known-as-saab-ab-saab-aerosystems
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/158AF681465535AF86258028005290A2.0001
- Page: https://openairdocs.org/proposed/FAA-2016-9056

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Saab AB, Saab Aeronautics Model SAAB 2000 airplanes. This proposed AD was prompted by an occurrence that was reported of rudder pedal restriction on a SAAB Model 2000 airplane with the large potable water system (LPWS) installed, equipped with in-line heaters. This proposed AD would require installation of shrinkable tubes on the water piping of the basic potable water system (BPWS). We are proposing this AD to prevent water spray in case of a failed pipe or coupling during water filling on the ground. This condition, if not corrected, could freeze parts of the flight control system possibly resulting in reduced control of the airplane.

## Notices in this docket

- Sep 8, 2016: Notice of proposed rulemaking (NPRM). (first notice), FR document 2016-21165, comments due Oct 24, 2016 (https://www.federalregister.gov/documents/2016/09/08/2016-21165/airworthiness-directives-saab-ab-saab-aeronautics-formerly-known-as-saab-ab-saab-aerosystems)

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