Commonwealth legislation

AD/PC-6/21 - Control System Inspection and Modification

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This directive requires owners/operators of Pilatus PC‑6 aeroplanes to inspect the flight‑control system every ≤100 hours TIS until completing a mandatory modification per Pilatus Service Bulletin No. 74, to be carried out by 1 April 1968. The Civil Aviation Safety Authority enforces compliance; owners/operators bear inspection, repair and modification costs. It’s aimed at ensuring control‑system integrity but creates recurring inspection burdens, scheduling pressure and potential maintenance bottlenecks before the deadline.

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Current sections

Direct links to the current provisions in AD/PC-6/21 - Control System Inspection and Modification.

AD/PC-6/21 - Control System Inspection and 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 Pilatus Porter PC-6 Series Aeroplanes

AD/PC-6/21	Control System Inspection and Modification	11/67
Applicability:	All models.
Document:	Pilatus SB No. 74.

Compliance: Inspect at intervals not exceeding 100 hours time in service until modified - modify before 1 April 1968.

Source text

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

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?xml version="1.0" encoding="utf-8" standalone="no"?>

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

Pilatus Porter PC-6 Series Aeroplanes

AD/PC-6/21	Control System Inspection and Modification	11/67
Applicability:	All models.
Document:	Pilatus SB No. 74.

Compliance: Inspect at intervals not exceeding 100 hours time in service until modified - modify before 1 April 1968.