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AD: Pratt & Whitney Canada Corp. Turboshaft Engines

AD NUMBER: 2013-03-21

PRODUCT: Certain serial number Pratt & Whitney Canada Corp. PW206B, PW206B2, PW206C, PW207C, PW207D, PW207D1, PW207D2, and PW207E turboshaft engines.
SUBJECT: Airworthiness Directive 2013-03-21
ACTION: Final Rule

SUMMARY: This AD was prompted by the discovery that certain power turbine (PT) disks were made to specific heat codes that may not achieve the maximum in-service life. This AD requires re-identification of the PT disk to a part number (P/N) with a lower life limit.

The FAA is issuing this AD to prevent possible uncontained PT disk failure and loss of helicopter control.

DATES: This AD becomes effective March 26, 2013.

FMI: AD

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