Airworthiness Directives; General Electric Company (GE) CT7-8, CT7-8A, CT7-8A1, CT7-8E, and CT7-8F5 Turboshaft Engines
airworthiness · Rule · Final rule. · Published 2011-10-05 · Effective 2011-11-09 · 76 FR 61559
Document
Document number
2011-25654
Federal Register citation
76 FR 61559
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2011-10-05
Effective date
2011-11-09
FAA docket
Docket No. FAA-2011-0392
Abstract
We are adopting a new airworthiness directive (AD) for the products listed above. This AD was prompted by four reports of unrecoverable engine stalls, during hover in a left-roll attitude. This AD requires the installation of an accessory gearbox (AGB) axis-A oil slinger nut to the axis-A shaft assembly. We are issuing this AD to prevent an unrecoverable engine stall, leading to a helicopter forced landing or accident.