Commonwealth legislation

AD/HS 125/138 - Wing Leading Edge Corrosion

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Commonwealth

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legislative instrument

Plain English Summary

3/10 complexity

Owners/operators of BAe 125 Series 800 and 1000 aeroplanes built before incorporation of Mod 253538A/B must carry out the actions in British Aerospace Mandatory Service Bulletin 57-77 to inspect/repair reported exfoliation corrosion at the wing leading edge/TKS panel interface.

Work must be done by the Bulletin’s deadline (within two years of manufacture or by 31 May 1994, whichever is later); owners bear the costs and follow the manufacturer’s technical instructions.

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AD/HS 125/138 - Wing Leading Edge Corrosion

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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 BAe 125 Series Aeroplanes

AD/HS 125/138 Wing Leading Edge Corrosion 9/93

Applicability: Model 125 Series 800 and 1000 aircraft pre-Mod. 253538A or B (Improved Corrosion Protection).

Requirement: Action in accordance with British Aerospace Mandatory Service Bulletin 57-77.

Note: UK CAA AD 016-05-93 refers.

Compliance: Within 2 years of the date of aircraft manufacture or prior to 31 May 1994, whichever occurs later.

Background: Reports have been received of exfoliation corrosion of the wing leading edge section at the interface with the TKS panels. This is due to the ingress of moisture through gaps in the sealant that have developed during service.

Source text

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