Airworthiness Directives; General Electric Company CT7-5, -7, and -9 Series Turboprop Engines
airworthiness · Rule · Final rule. · Published 2005-09-19 · Effective 2005-10-24 · 70 FR 54835
Document
Document number
05-17493
Federal Register citation
70 FR 54835
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2005-09-19
Effective date
2005-10-24
FAA docket
Docket No. FAA-2005-20944
Abstract
The FAA is adopting a new airworthiness directive (AD) for General Electric Company (GE) CT7-5A2, -5A3, -7A, -7A1, -9B, -9B1, and -9B2 turboprop engines, with stage 2 turbine aft cooling plate, part number (P/N) 6064T07P01, 6064T07P02, 6064T07P05, or 6068T36P01 installed. This AD requires a onetime eddy current inspection (ECI) of certain P/N stage 2 turbine aft cooling plate boltholes. This AD results from reports of six stage 2 turbine aft cooling plates found cracked during inspection. We are issuing this AD to prevent stage 2 aft cooling plate separation, resulting in uncontained engine failure and damage to the airplane.