Airworthiness Directives; General Electric Company (GE) CT58 Series Turboshaft Engines
airworthiness · Rule · Final rule. · Published 2008-10-27 · Effective 2008-12-01 · 73 FR 63629
Document
Document number
E8-25442
Federal Register citation
73 FR 63629
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
General Electric Company (GE) CT58 Series Turboshaft
Publication date
2008-10-27
Effective date
2008-12-01
FAA docket
Docket No. FAA-2008-0808
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain GE CT58 series turboshaft engines. This AD requires recalculating the lives of certain part numbered compressor spools using a new repetitive heavy lift (RHL) multiplying factor. This AD results from reports of cracks originating from the inner faces of the locking screw holes in the compressor spool. We are issuing this AD to prevent cracks due to RHL missions. Cracks could result in an uncontained rotor burst and damage to, or loss of, the helicopter and serious injuries to any person onboard.