Commonwealth legislation

AD/PMC/25 - Propeller Hub and Blade - Modification or Replacement (Shot Peening of Hub Retention Threads and Blade Shank Threads)

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This AD requires certain McCauley variable‑pitch propeller hubs and their 90AT‑8 blades that do not have shot‑peened retention/shank threads to be modified (shot peened) or replaced per McCauley SB No.100. It affects owners/operators of the listed propellers/serials, imposes short compliance windows for higher‑time units, and shifts costs and downtime to those operators while regulators enforce compliance.

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Current sections

Direct links to the current provisions in AD/PMC/25 - Propeller Hub and Blade - Modification or Replacement (Shot Peening of Hub Retention Threads and Blade Shank Threads).

AD/PMC/25 - Propeller Hub and Blade - Modification or Replacement (Shot Peening of Hub Retention Threads and Blade Shank Threads)

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Propellers - Variable Pitch - McCauley

AD/PMC/25 Propeller Hub and Blade - Modification or Replacement (Shot Peening of Hub Retention

Threads and Blade Shank Threads)

1/73

Applicability: Hubs on propeller models E2A34C64 and C64A, and E2A34C73, C73A, C73J and C73K with S/Nos. 64000 thru 699999 not incorporating shot peened blade retention threads. Ref. AD.PMC/20 (SB No. 88). All 90AT-8 blades used with above propeller models, and not incorporating shot peened shank threads. Ref. AD/PMC/24 (SB No. 81).

Document: McCauley SB No. 100.

Compliance: For propellers that have completed 775 or more hours total time in service - within 25 hours time in service after 31 January 1973. For propellers that have completed less than 700 hours total time in service - before achieving 800 hours total time in service.

Source text

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

1 AD/PMC/25 - Propeller Hub and Blade - Modification or Replacement (Shot Peening of Hub Retention Threads and Blade Shank Threads)