Commonwealth legislation

AD/S-76/14 - Fuselage Bulkhead - Engine Support Fitting Area - Inspection and 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This Act has been repealed and is no longer in force. It is retained for historical reference.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

2/10 complexity

What this is: A mandatory safety directive (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority (CASA) requiring specific helicopters to be inspected and repaired.

Who it affects: Owners and operators of Sikorsky S-76 helicopters with specific serial numbers: 76003, 76005, 76006, and any from 760001 to 760024.

What it requires:

Inspection: Check the fuselage bulkhead (a structural wall) in the area where the engine is mounted
Modification: Carry out any necessary repairs or modifications to fix cracks found in this area
How to comply: Follow the detailed instructions in Sikorsky Service Bulletin No. 76-53-5A

Why it matters: The manufacturer discovered cracks in the engine support bulkhead at a specific location (called STA.255). This structural failure could compromise the safety of the aircraft, so CASA is mandating checks to ensure these cracks are found and fixed before they cause serious problems.

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Current sections

Direct links to the current provisions in AD/S-76/14 - Fuselage Bulkhead - Engine Support Fitting Area - Inspection and Modification.

AD/S-76/14 - Fuselage Bulkhead - Engine Support Fitting Area - Inspection and 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-76/14 Fuselage Bulkhead - Engine Support

Fitting Area - Inspection and Modification Applicability: All models S-76 with S/Nos. 76003, 76005, and 76006; 760001 to 760024. Document: Sikorsky CSB No. 76-53-5A.

Compliance: As per requirement document.

10/80

Background: The manufacturer has received reports of cracks being found in the engine support bulkhead at STA.255.

Source text

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