Airworthiness Directives; General Electric Company CT58 Series Turboshaft Engines
airworthiness · Rule · Final rule. · Published 1997-10-20 · Effective 1997-12-19 · 62 FR 54373
Document
Document number
97-27351
Federal Register citation
62 FR 54373
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
General Electric Company CT58 Series Turboshaft
Publication date
1997-10-20
Effective date
1997-12-19
FAA docket
Docket No. 97-ANE-18-AD
Abstract
This amendment adopts a new airworthiness directive (AD), applicable to General Electric Company CT58 series turboshaft engines, that requires removal from service of certain stage 1 and 2 forward cooling plates, and stage 2 aft cooling plates, and replacement with serviceable parts. This amendment is prompted by reports of certain cooling plates forged with contaminated alloy that could reduce the lives of the parts. The actions specified by this AD are intended to prevent cooling plate fracture, which could result in a contained engine failure, and an inflight engine shutdown.