Summary
We are adopting a new airworthiness directive (AD) for all Pratt & Whitney Division PW4050, PW4052, PW4056, PW4060, PW4060A, PW4060C, PW4062, PW4062A, PW4152, PW4156, PW4156A, PW4158, PW4160, PW4460, PW4462, and PW4650 turbofan engines, including models with any dash number suffix. This AD was prompted by 16 reports of damaged or failed 3rd stage low-pressure turbine (LPT) duct segments. This AD requires removing from service certain part numbers (P/Ns) of 3rd stage LPT duct segments. We are issuing this AD to prevent failure of the 3rd stage LPT duct segments, which could lead to LPT rotor damage, uncontained engine failure, and damage to the airplane.
Directive Details
AD Number
FAA-2012-0546
Document Number
2012-27168
Type
Rule
Publication Date
November 14, 2012
Effective Date
December 19, 2012
Affected Manufacturer
Pratt & Whitney Division Turbofan
Criticality
important
Emergency
No
Docket ID
Docket No. FAA-2012-0546
Topics
Official Documents
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