Document ID: chunk:federal_register_of_legislation:F2006B02255:body:0
Version: federal_register_of_legislation:F2006B02255
Segment Type: other
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Character Range: 0–1023

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
 SCHEDULE OF AIRWORTHINESS DIRECTIVES

 Allison Turbine Engines - 250 Series

 AD/AL 250/43
 Amdt 3

 Second Stage Turbine Nozzle 2/90

            Applicability: Allison Model 250-C28B, C28C engines fitted with P/N 6898952 second stage turbine nozzles.

            Requirement: Modify P/N 6898952 second stage turbine nozzles in accordance with Allison CEB- A-72-2044 Rev 4.

            Note: FAA AD 89-23-12 refers.

 Compliance: Prior to 31 March 1990. Background: This Directive has been amended to;
              1. Delete reference to CSL 2030 which has been cancelled by the manufacturer, and

2.    Require compliance with the requirements of CEB-A-72-2044 Rev 4, and

             3.    Make reference to FAA AD 89-23-12.

            The Amendment follows advice of another P/N 6898952 nozzle failure in service. Failure of the nozzle has resulted in uncontained second stage turbine wheel failure.