COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Bell Helicopter Textron 212 Series Helicopters
AD/BELL 212/47 Lower Planetary Spider Gear 9/91
DM
All Models.
Action in accordance with Bell Alert SB No. 212-91-66.
As directed in the Requirement Document with a revised effective date 12 July 1991.
A special inspection of the main gearbox lower planetary spider gear P/N 204-040-
785-003 has been introduced by the manufacturer after fatigue cracking has been detected.