Document ID: chunk:federal_register_of_legislation:F2009L03849:body:0:p2
Version: federal_register_of_legislation:F2009L03849
Segment Type: other
Provision Reference: 
Character Range: 2646–4510

through d. of this AD.

             Later revisions of the above SB, approved by the United States Federal Aviation Administration (FAA) as an Alternate Method of Compliance (AMOC) to FAA AD 71-07-01 are considered acceptable for compliance with the equivalent Requirements of this AD.

             Note 2:  FAA AD 71-07-01 Amdt. 39-1279 dated 7 September 1971 refers.
Compliance:  Compliance required as indicated on all front compressor front hubs that have accumulated 6000 cycles or more in service.

             For Requirement 1.a. - Within the next 150 cycles in service and every 150 cycles in service thereafter until the hub is removed.

             For Requirement 1.b. - Within the next 150 cycles in service, unless already accomplished and every 400 cycles in service thereafter until the hub is removed.

             For Requirement 1.c. - Within the next 150 cycles in service, unless already accomplished and every 1500 cycles in service thereafter.

             For Requirement 1.d. - Before further flight.

             For Requirement 2.a. - Within the next 150 cycles in service.

             For Requirement 2.b. - At the intervals defined in Requirements 1.a. through 1.d. of this AD.
             This Airworthiness Directive becomes effective on 19 November 2009.
Background:  Surface defects found on certain front compressor hubs may lead to failure of the hub and subsequent damage or loss of control of the aeroplane.

             This AD is issued following a review of airworthiness directives preceding changes to CASR 39.  This AD was not previously issued however a review of the data indicates that the FAA AD referenced is still current.  In addition the manufacturer recently issued an updated ASB referencing the FAA AD.

David Villiers
Delegate of the Civil Aviation Safety Authority

28 September 2009