Summary
We are adopting a new airworthiness directive (AD) for all Pratt & Whitney Division (PW) PW4052, PW4056, PW4060, PW4062, PW4062A, PW4152, PW4156A, PW4158, PW4460, and PW4462 turbofan engine models, including engines identified with suffixes -1C, -1E, -3, -3A, or -3B. This AD was prompted by the discovery of multiple cracked 4th stage low-pressure turbine (LPT) air seals in the fleet. This AD requires removal from service of certain 4th stage LPT air seals. We are issuing this AD to address the unsafe condition on these products.
Directive Details
AD Number
FAA-2017-0817
Document Number
2018-12830
Type
Rule
Publication Date
June 15, 2018
Effective Date
July 20, 2018
Affected Manufacturer
Pratt & Whitney Division Turbofan
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2017-0817
Topics
Official Documents
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