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 250/18 Compressor Bleed Valve Orifice - Installation 7/73
Applicability: All 250-C18A series fitted with bleed valves. P/N 6854607 or 6870460 installed in Hughes 369H Helicopters.
Document: Allison 250 CEB 107.
Compliance: Before 31 July 1973.