Airworthiness Directives; Hamilton Sundstrand Power Systems T-62T Series Auxiliary Power Units (APUs)
airworthiness · Rule · Final rule. · Published 2004-11-26 · Effective 2005-01-03 · 69 FR 68767
Document
Document number
04-25792
Federal Register citation
69 FR 68767
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2004-11-26
Effective date
2005-01-03
FAA docket
Docket No. 2003-NE-61-AD
Abstract
The FAA is adopting a new airworthiness directive (AD) for Hamilton Sundstrand Power Systems Models T-62T-46C12 and T-62T-40C14 (APS 500R) APUs with fuel filter housing assembly, part number (P/N) 4951627, 4951960, or 4952039, installed. This AD requires installation of a bracket to prevent a failed bypass button from protruding beyond the internal o-ring seal. This AD results from reports of leaks caused by cracked bypass buttons that protruded beyond the o-ring seal. We are issuing this AD to prevent a fire or explosion caused by a fuel leak from a failed bypass button on the fuel filter housing.