Summary
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.
Directive Details
AD Number
FAA-2016-9592
Document Number
2017-14545
Type
Rule
Publication Date
July 14, 2017
Effective Date
August 18, 2017
Affected Manufacturer
CFM International S.A. Turbofan
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2016-9592
Topics
Official Documents
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