Commonwealth legislation

AD/AC/95 - Bleed Air System Leak Check

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Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This AD requires owners/operators of Twin Commander 681, 690, 690A and 690B aeroplanes to perform bleed‑air system pressure leak checks per Twin Commander Mandatory Service Bulletin No. 221. The first check is due at the next annual inspection or within 100 hours after 4 Jan 1996, whichever is earlier, and must be repeated every 12 months or 500 hours, whichever occurs first. It makes the service bulletin’s procedures mandatory immediately, affecting owners and maintenance providers.

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AD/AC/95 - Bleed Air System Leak Check

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Twin Commander (Gulfstream/Rockwell/ Aerocommander 500, 600 and 700) Series Aeroplanes

AD/AC/95 Bleed Air System Leak Check 1/96

Applicability: All model 681, 690, 690A and 690B series aircraft.

Requirement: Action in accordance with Twin Commander Mandatory Service Bulletin No 221. Compliance: At next annual inspection or within 100 hours’ time in service after 4 January 1996,

whichever occurs first. Thereafter, reinspect at intervals not exceeding 12 months or 500 hours’ time in service, whichever occurs first.

Background: The manufacturer has advised that revised instructions for pressure leak checks will be incorporated into the maintenance manual at some future date.

This AD is issued to give effect to the Service Bulletin prior to formal incorporation of the requirements in the maintenance system.

Source text

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

1 AD/AC/95 - Bleed Air System Leak Check