COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Douglas DC4 Series Aeroplanes
AD/DC4/21 Control Surface Attachment - Modification NK
Document: 1. Douglas SB (DC4) No. 83, dated 20 November 1947; or
2. FAA AD 48-6-5; or
3. ANO 105.1.16.2.5.20, Issue 2.