Commonwealth legislation

AD/HS 748/22 - Main Hydraulic Accumulators - Corrosion Inspection

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

Airworthiness Directive (effective 19 June 1997) requires operators of British Aerospace HS 748 series aircraft to inspect main hydraulic accumulators for corrosion and carry out repairs per BAe Service Bulletin HS748-29-49. Initial inspection within 30 days, then every two years. Issued after corrosion was found under accumulator mounts, it obliges operators to arrange and pay for inspections/repairs under the manufacturer’s procedures, with attendant maintenance scheduling and availability impacts.

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AD/HS 748/22 - Main Hydraulic Accumulators - Corrosion 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 British Aerospace (Hawker Siddeley) HS 748 Series Aeroplanes

AD/HS 748/22 Main Hydraulic Accumulators - Corrosion

Inspection

Applicability: British Aerospace HS748 aircraft.

7/97

Requirement: Inspect the main hydraulic accumulators for corrosion and repair as required, in accordance with British Aerospace Service Bulletin HS748-29-49 issued Feb 25/97.

Compliance: Within 30 days from effective date of this Directive and thereafter every two years.

This Airworthiness Directive becomes effective on 19 June 1997.

Background: Extensive corrosion has been found under the mounting brackets of the main hydraulic accumulators of an operator's aircraft during unscheduled maintenance which required removal of the accumulators.

Source text

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