Commonwealth legislation

AD/S-76/37 - Engine Fire Extinguisher Harness - Modification

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

1/10 complexity

This mandatory Airworthiness Directive applies to Sikorsky S‑76A helicopters fitted with fire‑extinguisher harness P/N 76552‑10128‑041 or ‑042. It requires rewiring the two engine fire‑extinguisher primers in parallel per Sikorsky Alert Service Bulletin 76‑26‑1 to ensure one primer can still actuate the extinguisher if the other fails. The change increases redundancy and must be completed within 100 flight hours after April 30, 1985.

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AD/S-76/37 - Engine Fire Extinguisher Harness - Modification

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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 Sikorsky S-76 Series Helicopters

AD/S-76/37 Engine Fire Extinguisher Harness - Modification 4/85 Applicability: All model S-76A fitted with fire extinguisher harness P/Nos 76552-10128-041/042. Requirement: Sikorsky Alert Service Bulletin No. 76-26-1.

Compliance: Within 100 hours time in service after 30 April 1985.

Background: System redundancy is improved by wiring the dual fire extinguisher primers in parallel.

Source text

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