# Proposed AD FAA-2008-0298: Various Transport Category Airplanes Equipped with Auxiliary Fuel Tanks Installed in Accordance with Certain Supplemental Type Certificates

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2008-22-01
- Products: Various
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 14, 2008, 73 FR 13803
- Comments due: April 28, 2008
- Became: [AD 2008-22-01](https://openairdocs.org/ad/2008-22-01)
- Docket: FAA-2008-0298 (https://www.regulations.gov/docket/FAA-2008-0298, where comments are filed)
- Project: 2007-NM-316-AD
- FR document: E8-5148
- Official PDF: https://openairdocs.org/files/sha256/e2/3e/e23e836454235f41ae88b75fc3b7f6546aef8482700a73e87726b6830f627c63 (from https://www.govinfo.gov/content/pkg/FR-2008-03-14/pdf/E8-5148.pdf)
- Federal Register: https://www.federalregister.gov/documents/2008/03/14/E8-5148/airworthiness-directives-various-transport-category-airplanes-equipped-with-auxiliary-fuel-tanks
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/819E3A507F6832898625740C00525B5A.0001
- Page: https://openairdocs.org/proposed/FAA-2008-0298

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for various transport category airplanes. This proposed AD would require deactivation of PATS Aircraft, LLC, auxiliary fuel tanks. This proposed AD results from fuel system reviews conducted by the manufacturer, which identified potential unsafe conditions for which the manufacturer has not provided corrective actions. 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

- Mar 14, 2008: Notice of proposed rulemaking (NPRM). (first notice), FR document E8-5148, comments due Apr 28, 2008 (https://www.federalregister.gov/documents/2008/03/14/E8-5148/airworthiness-directives-various-transport-category-airplanes-equipped-with-auxiliary-fuel-tanks)

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