Commonwealth legislation

AD/PHS/9 - Model 54H60 Pitch Lock Regulator Assembly - Inspection and Modification

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This Airworthiness Directive from CASA applies to Hamilton Standard Model 54H60 variable‑pitch propellers and mandates inspections and modifications of the pitch‑lock regulator assembly per Hamilton Standard Service Bulletin 54H60 No.-59 Rev.1. It aims to reduce risk of separation of the pitchlock extension sleeve by altering retention features, and therefore affects aircraft operators, owners and maintenance organisations responsible for affected propellers.

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AD/PHS/9 - Model 54H60 Pitch Lock Regulator Assembly - Inspection and Modification

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Propellers - Variable Pitch - Hamilton Standard

AD/PHS/9 Model 54H60 Pitch Lock Regulator Assembly - Inspection and Modification

Applicability: Propeller models 54H60-81, 91, 117, 125. Document: Hamilton Standard SB 54H60, No.-59 Rev. 1.

Note: FAA AD 75-03-05 refers.

Compliance: In accordance with the requirement document.

Background: To reduce the possibility of separation of the pitchlock extension sleeve, modifications are introduced to the retention thread and surge valve housing.

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Source text

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