Commonwealth legislation

AD/BELL 47/84 - Frame Stiffening Assembly 660-2001-1 - Inspection

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

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Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

What this is: A mandatory safety inspection order (called an Airworthiness Directive) for certain Bell 47 helicopters.

Who it affects: Owners and operators of Bell 47G helicopters that have been modified with Soloy turbine engine conversions.

What must be done: Inspect the "Frame Stiffening Assembly" (part number 660-2001-1) to check if the tubes inside it received proper interior treatment during manufacturing.

Why: There was a risk that the tubes were not properly treated on the inside, which could lead to corrosion or structural weakness.

When: The inspection had to be completed within 100 hours of flying time after 31 March 1981.

How: Follow the instructions in Soloy Conversions Limited Service Bulletin 12-660.

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AD/BELL 47/84 - Frame Stiffening Assembly 660-2001-1 - Inspection

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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 47 (All Variants) Series Helicopters

AD/BELL 47/84 Frame Stiffening Assembly 660-2001-1 - Inspection

Applicability: All models 47G equipped with Soloy turbine conversion. Document: Soloy Conversions Limited SB 12-660.

Compliance: Within 100 hours time in service after 31 March 1981.

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Background: There is a possibility that the tubes comprising the stiffener assembly may not have received interior treatment.

Source text

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