COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
DHC-6 (Twin Otter) Series Aeroplanes
AD/DHC-6/28 Engine Compressor Inlet Screens - Icing Restrictions
8/71
Applicability: All models with PT6-20 and -27 engines using fine mesh engine compressor inlet screens.
Document: De Havilland Aircraft of Canada SB No. 6/282. Compliance: Before 1 September 1971.