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Mon, Mar 26, 2012

AD: Pratt & Whitney Division Turbofan Engines

AD NUMBER: 2012-06-18

PRODUCT: All Pratt & Whitney 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.

SUBJECT: Airworthiness Directive 2012-06-18
ACTION: Final Rule

SUMMARY: This AD was prompted by reports of five engine in-flight shutdowns and seven unplanned engine removals. This AD requires inspections, cleaning, and engine modifications to address coking in the No. 4 bearing compartment and in the oil pressure and scavenge tubes. The FAA is issuing this AD to prevent an engine fire, a fractured fan drive shaft, and damage to the airplane.

DATES: This AD is effective April 27, 2012.

FMI: AD

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