AD/AL 250/47 - First Stage Turbine Wheel P/N 6853306 - Replacement
1AD/AL 250/47 - First Stage Turbine Wheel P/N 6853306 - Replacement
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Image unavailable in extracted text Allison Turbine Engines - 250 Series
AD/AL 250/47 First Stage Turbine Wheel P/N 6853306 - Replacement
Applicability: All 250-C20 and 250-B17 models. Document: 1. Allison 250-C20 CEB-1048; or
- Allison B17 TP CEB-1031.
Compliance: As per reference document.
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Background: This Directive is issued to prevent first stage turbine wheel failures. Several failures of P/N 6853306 wheels have occurred overseas.