Commonwealth legislation

AD/AC-CLA/5 - Shock Strut Assembly

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This Act has been repealed and is no longer in force. It is retained for historical reference.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 Airworthiness Directive (a mandatory safety order issued by the aviation regulator) requires specific maintenance checks on landing gear components to prevent mechanical failures.

Who it affects Owners and operators of all Call Air A-9 series aeroplanes (light aircraft made by Aircraft Parts and Development).

What it requires You must remove and disassemble the main landing gear shock struts (part number 12018) during major maintenance checks to:

Inspect the general condition of the assembly
Check specifically for dangerous thinning of the tube walls caused by rubbing against the internal spring

When At the first major inspection after 30 April 1975, and then again at every subsequent major inspection.

Why this matters Worn or damaged shock struts could fail during landing, potentially causing the landing gear to collapse and resulting in serious accidents.

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AD/AC-CLA/5 - Shock Strut Assembly

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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 Aircraft Parts and Development (CALL AIR) A-9 Series Aeroplanes

AD/AC-CLA/5 Shock Strut Assembly 4/75

Applicability: All A-9 series.

Requirement: Main landing gear shock strut assemblies P/N 12018 shall be disassembled and inspected for general condition.

Note: Particular attention should be paid to the bore of the tube for reduction of wall thickness due to contact with the inner spring.

Compliance: At next major inspection after 30 April 1975 and thereafter at each major inspection.

Source text

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