Summary
We are adopting a new airworthiness directive (AD) for certain serial number Pratt & Whitney Canada Corp. PW206B, PW206B2, PW206C, PW207C, PW207D, PW207D1, PW207D2, and PW207E turboshaft engines. 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. We are issuing this AD to prevent possible uncontained PT disk failure and loss of helicopter control.
Directive Details
AD Number
FAA-2012-0942
Document Number
2013-03412
Type
Rule
Publication Date
February 19, 2013
Effective Date
March 26, 2013
Affected Manufacturer
Pratt & Whitney Canada Corp. Turboshaft
Criticality
important
Emergency
No
Docket ID
Docket No. FAA-2012-0942
Topics
Official Documents
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