Commonwealth legislation

AD/B727/57 - Thrust Reverser Deflector Doors - Modification

In ForceCTH

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Commonwealth

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legislative instrument

Plain English Summary

3/10 complexity

This AD from CASA mandates immediate modification of Boeing 727 thrust‑reverser deflector doors and replacement of specified bolt part numbers, to be done exactly as directed in two Boeing service documents. It applies to all Boeing 727 operators and requires compliance “forthwith.”

It matters because it’s prescriptive, leaves little operational flexibility, and imposes parts, labour and downtime costs on operators to address an airworthiness concern the AD implies but does not describe.

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Direct links to the current provisions in AD/B727/57 - Thrust Reverser Deflector Doors - Modification.

AD/B727/57 - Thrust Reverser Deflector Doors - Modification

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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 Boeing 727 Series Aeroplanes

AD/B727/57 Thrust Reverser Deflector Doors - Modification 8/68

Applicability: All models.

Requirement: 1. Modify the thrust reverser deflector doors in accordance with Boeing SB No. 78- 51, Rev. 1.

2. Modify the thrust reverser deflector doors in accordance with Boeing SL 6-7132- 3375 dated 1 March 1967 (or later revision).

3. Replace bolt P/N BAC-B30EK8-48 or P/N BAC-C30EK8-48C. Compliance: Forthwith.

Source text

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