Summary
We are adopting a new airworthiness directive (AD) for certain General Electric Company (GE) CT7-8A and CT7-9B model turboshaft engines. This AD was prompted by reports from the manufacturer that the high-pressure compressor (HPC) impeller installed on these engines may have suffered from material degradation during the manufacturing process. This AD requires removal of the affected HPC impellers. We are issuing this AD to address the unsafe condition on these products.
Directive Details
AD Number
FAA-2017-0452
Document Number
2017-19961
Type
Rule
Publication Date
September 22, 2017
Effective Date
October 27, 2017
Affected Manufacturer
General Electric Company Turboshaft
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2017-0452
Topics
Official Documents
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