Summary
The FAA proposes to adopt a new airworthiness directive (AD) for all CFM International, S.A. (CFM) CFM56-5B and CFM56-7B model turbofan engines with a certain high-pressure turbine (HPT) inner stationary seal installed. This proposed AD was prompted by cracks found in the rotating air HPT front seal. This proposed AD would require removal, inspection, and replacement of the affected HPT inner stationary seal, and depending on the findings, removal and replacement of the rotating air HPT front seal. The FAA is proposing this AD to address the unsafe condition on these products.
Directive Details
AD Number
FAA-2019-0568
Document Number
2019-20054
Type
Proposed Rule
Publication Date
September 20, 2019
Comments Close
November 4, 2019
Affected Manufacturer
CFM International S.A. Turbofan
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2019-0568
Topics
Official Documents
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