Summary
We are adopting a new airworthiness directive (AD) for certain CFM International, S.A. model CFM56-5B series turbofan engines. This AD was prompted by a normal quality sampling at CFM International, S.A. that isolated a production batch of fan blades with nonconforming geometry of mid-span shroud tips of the fan blades. This AD requires removing from service certain serial number (S/N) fan blades. We are issuing this AD to prevent an inflight shutdown (IFSD) of one or more engines following foreign object damage (FOD) or a bird strike.
Directive Details
AD Number
FAA-2011-0946
Document Number
2012-2893
Type
Rule
Publication Date
February 9, 2012
Effective Date
March 15, 2012
Affected Manufacturer
CFM International, S.A. Turbofan
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2011-0946
Topics
Official Documents
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