# Proposed AD FAA-2008-0135: Short Brothers Model SD3-60 Airplanes Equipped with an Auxiliary Fuel Tank System Installed in Accordance with Supplemental Type Certificate (STC) SA00404AT

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2008-12-08
- Products: Short Brothers
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 29, 2008, 73 FR 11070
- Comments due: April 14, 2008
- Became: [AD 2008-12-08](https://openairdocs.org/ad/2008-12-08)
- Docket: FAA-2008-0135 (https://www.regulations.gov/docket/FAA-2008-0135, where comments are filed)
- Project: 2007-NM-345-AD
- FR document: E8-3825
- Official PDF: https://openairdocs.org/files/sha256/20/4c/204cfcfcf1759b79974a008e3bc1fbca9b35312fea5e7d0de89cc00888b8c31e (from https://www.govinfo.gov/content/pkg/FR-2008-02-29/pdf/E8-3825.pdf)
- Federal Register: https://www.federalregister.gov/documents/2008/02/29/E8-3825/airworthiness-directives-short-brothers-model-sd3-60-airplanes-equipped-with-an-auxiliary-fuel-tank
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E331D9CBA47AE9BB862574030068A30C.0001
- Page: https://openairdocs.org/proposed/FAA-2008-0135

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Short Brothers Model SD3-60 airplanes. This proposed AD would require deactivation of auxiliary fuel tank systems installed in accordance with Supplemental Type Certificate (STC) SA00404AT. This proposed AD results from fuel tank system review requirements done in accordance with Special Federal Aviation Regulation No. 88 (SFAR 88), which identified potential unsafe conditions. We are proposing this AD to prevent the potential of ignition sources inside fuel tanks, which, in combination with flammable fuel vapors, could result in fuel tank explosions and consequent loss of the airplane.

## Notices in this docket

- Feb 29, 2008: Notice of proposed rulemaking (NPRM). (first notice), FR document E8-3825, comments due Apr 14, 2008 (https://www.federalregister.gov/documents/2008/02/29/E8-3825/airworthiness-directives-short-brothers-model-sd3-60-airplanes-equipped-with-an-auxiliary-fuel-tank)

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