COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Twin Commander (Gulfstream/Rockwell/ Aerocommander 500, 600 and 700) Series Aeroplanes
AD/AC/39 Wing Front Spar Lower Cap - Inspection 2/68
Applicability: All 560E, 680 and 680E models.
Requirement: Inspect the wing front spar lower cap between wing stations 67 and 86, left and right hand sides, using radiographic technical DCA NDI/R/1 or other technique approved by the Secretary, for damaged or double drilled holes, poor rivet fit or cracking.
Compliance: Within 100 hours’ time in service after 22 February 1968.