Airworthiness Directives; General Electric Company (GE) CF34-3A1, -3B, and -3B1 Turbofan Engines
airworthiness · Rule · Final rule; request for comments. · Published 2001-09-24 · Effective 2001-10-09 · 66 FR 48789
Document
Document number
01-23323
Federal Register citation
66 FR 48789
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Publication date
2001-09-24
Effective date
2001-10-09
FAA docket
Docket No. 2001-NE-21-AD
Abstract
This amendment adopts a new airworthiness directive (AD) that is applicable to GE CF34-3A1, -3B, and -3B1 turbofan engines with scavenge screens part numbers (P/N's) 4047T95P01 and 5054T86G02 installed in the B-sump oil scavenge system. This action requires initial and repetitive visual inspections and cleaning of the B-sump scavenge screens. This amendment is prompted by five reports of B-sump oil scavenge system failure causing engine in-flight shutdowns. The actions specified in this AD are intended to prevent B-sump scavenge screen blockage due to coking, which could result in ignition of B-sump oil in the secondary air system, fan drive shaft separation, and uncontained engine failure.