Commonwealth legislation

AD/HS 748/4 - Door Sill and Secondary Lock Mechanism Micro Switches

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This directive requires operators of all British Aerospace (Hawker Siddeley) HS 748 aircraft to perform recurring inspections of door sill and secondary lock mechanism micro switches per British Aerospace Service Bulletin 52/106.

Inspections must follow the manufacturer’s Accomplishment Instructions and be repeated at intervals not exceeding 1,000 hours TIS, imposing recurring maintenance costs and scheduling impacts on owners/operators while confirming switch integrity for continued airworthiness.

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AD/HS 748/4 - Door Sill and Secondary Lock Mechanism Micro Switches

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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British Aerospace (Hawker Siddeley) HS 748 Series Aeroplanes

AD/HS 748/4 Door Sill and Secondary Lock Mechanism Micro Switches

13/94

Applicability: All HS 748 aircraft.

Requirement: Inspect all door sill and secondary lock mechanism micro switches in accordance with the Accomplishment Instructions of British Aerospace Aircraft Group, Manchester Division HS 748 Service Bulletin 52/106 dated November 1982.

Note: CAA(UK) AD 001-01-83 refers.

Compliance: At intervals not to exceed 1000 hours time in service, effective 8 December 1994.

Background: This Directive introduces a periodic inspection to confirm the integrity of the door sill and secondary lock mechanism micro switches of the crew/freight, passenger and baggage doors, including large freight doors where applicable.

Source text

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

1 AD/HS 748/4 - Door Sill and Secondary Lock Mechanism Micro Switches