Airworthiness Directives; CFM International S.A. Turbofan Engines
airworthiness · Rule · Final rule. · Published 2017-07-14 · Effective 2017-08-18 · 82 FR 32447
Document
Document number
2017-14545
Federal Register citation
82 FR 32447
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
CFM International S.A. Turbofan
Publication date
2017-07-14
Effective date
2017-08-18
FAA docket
Docket No. FAA-2016-9592
Abstract
We are adopting a new airworthiness directive (AD) for certain CFM International S.A. (CFM) CFM56-3, -3B, and -3C turbofan engines. This AD was prompted by a report of dual-engine loss of thrust control (LOTC) that resulted in an air turn back. This AD requires initial and repetitive checks of the variable stator vane (VSV) actuation system in the high-pressure compressor (HPC). We are issuing this AD to address the unsafe condition on these products.