Commonwealth legislation

AD/HS 125/54 - Fuselage Front Pressure Bulkhead - Inspection

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

4/10 complexity

This AD mandates inspections of the fuselage front pressure bulkhead on HS/DH/BH 125 aeroplanes up to Series 400, adopting BAe 125 Service Bulletin No. 53‑52 procedures but requiring flight counts to be measured in pressurised flights. It follows discovery of cracking after 6,700 flights.

It affects aircraft owners/operators and maintenance organisations, creating inspection, repair and downtime costs while delegating technical detail to the manufacturer’s service bulletin.

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AD/HS 125/54 - Fuselage Front Pressure Bulkhead - 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 BAe 125 Series Aeroplanes

AD/HS 125/54 Fuselage Front Pressure Bulkhead - Inspection 10/80

Applicability: All HS/DH/BH 125 models up to and including Series 400. Document: British Aerospace 125 SB No. 53-52.

Compliance: As per requirement document except that stated flights shall be pressurised flights.

Background: Cracking in the corner bend radii of both control pressings on one aircraft was discovered on an overseas aeroplane after 6700 flights.

Source text

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