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 250/3 Oil Filter By-Pass Valve Poppet Guide - Replacement
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Applicability: All 250-C18 and 250-C18A engine gearboxes specified in Allison CEB No. 250 CEB-31.
Document: Allison CEB No. 250 CEB-31.
Compliance: Before installation in an aircraft following next overhaul completed after 13 June 1968.