Commonwealth legislation

AD/BELL 212/47 - Lower Planetary Spider Gear

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This directive makes compliance with Bell Alert SB No. 212-91-66 mandatory for all Bell 212 helicopters, requiring the special inspection and any corrective actions set out in the manufacturer’s bulletin.

It was issued after fatigue cracking was detected in the main gearbox lower planetary spider gear (P/N 204-040-785-003); the mandatory compliance date was revised to 12 July 1991.

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AD/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

View image in the official source Bell Helicopter Textron 212 Series Helicopters

AD/BELL 212/47 Lower Planetary Spider Gear 9/91

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.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.