AD/AL 250/45 - Power Turbine Inner and Outer Coupling Shaft - Replacement
1AD/AL 250/45 - Power Turbine Inner and Outer Coupling Shaft - 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 250/45 Power Turbine Inner and Outer Coupling Shaft - Replacement
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Applicability: Model 250-B17B, C20B, -C28B and -C30 engines fitted with turbines of S/Nos. specified in the reference document.
Document: 1. Allison 250-C20B CEB-A-1173; or
2. Allison 250-B17B CEB-A-1138; or
3. Allison 250-C28B CEB-A-72-2055; or
4. Allison 250-C30 CEB-A-72-3049.
Compliance: Within 100 hours’ time in service after 31 July 1981.
Background: This Directive is issued to preclude a power turbine coupling failure.