AD/BELL 212/47 - Lower Planetary Spider Gear
1AD/BELL 212/47 - Lower Planetary Spider Gear
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Image unavailable in extracted text Bell Helicopter Textron 212 Series Helicopters
AD/BELL 212/47 Lower Planetary Spider Gear 9/91
DM
Applicability: All Models.
Requirement: Action in accordance with Bell Alert SB No. 212-91-66.
Compliance: As directed in the Requirement Document with a revised effective date 12 July 1991. Background: 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.