Document ID: chunk:federal_register_of_legislation:F2006B08454:body:0:p2
Version: federal_register_of_legislation:F2006B08454
Segment Type: other
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Character Range: 2894–3835

PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
 SCHEDULE OF AIRWORTHINESS DIRECTIVES

                 (b) For CF34-1A, -3A and -3A2 engines, replace the air seal at next hot section inspection or engine overhaul, whichever occurs first, but not to exceed 3000 hours time in service from the effective date of this Airworthiness Directive.

            This Airworthiness Directive becomes effective on 22 August 2001.

            Background: This Directive is prompted by advice that failure of a No.5 bearing rotating air seal resulted in a fire in the cavity of the low pressure turbine (LPT), overtemperature of the LPT disk and excessive disk growth. Such distress to the turbine disk could lead to an uncontained engine failure.

 Eugene Paul Holzapfel
 Delegate of the Civil Aviation Safety Authority 15 August 2001

 The above AD is notified in the Commonwealth of Australia Gazette on 22 August 2001.