Airworthiness Directives; Hamilton Sundstrand Power Systems (Formerly Sundstrand Power Systems) Auxiliary Power Units Models T-62T-46C2, T-62T-46C2A, T-62T-46C3, T-62T-46C7, and T-62T-46C7A
airworthiness · Rule · Final rule. · Published 2005-11-09 · Effective 2005-12-14 · 70 FR 67904
Document
Document number
05-22208
Federal Register citation
70 FR 67904
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2005-11-09
Effective date
2005-12-14
FAA docket
Docket No. FAA-2005-21719
Abstract
The FAA is adopting a new airworthiness directive (AD) for Hamilton Sundstrand Power Systems (formerly Sundstrand Power Systems) auxiliary power units (APUs) models T-62T-46C2, T-62T-46C2A, T-62T- 46C3, T-62T-46C7, and T-62T-46C7A, with compressor impeller assembly, part number (P/N) 4502020 or 4502020A, installed. This AD requires removal from service of those compressor impeller assemblies at reduced service life limits. This AD results from two reports of uncontained failures of compressor impeller assemblies. We are issuing this AD to prevent an uncontained APU failure and damage to the airplane.