Commonwealth legislation

AD/PC-12/20 - Stick Pusher System - Replacement

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Commonwealth

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legislative instrument

Plain English Summary

2/10 complexity

This directive mandates replacement of the Stick Pusher Capstan and Servo on Pilatus PC‑12 and PC‑12/45 aeroplanes (MSN ≤ 180) per Pilatus Service Bulletin No. 22‑003, to be completed within four months of the 25 Aug 1999 effective date.

Owners/operators must arrange and pay for parts, labour and downtime. The change corrects a tolerance issue that could cause excessive control‑column forces, creating short‑term demand for parts and maintenance but reducing a safety risk.

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Current sections

Direct links to the current provisions in AD/PC-12/20 - Stick Pusher System - Replacement.

AD/PC-12/20 - Stick Pusher System - Replacement

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Pilatus PC-12 Series Aeroplanes

AD/PC-12/20 Stick Pusher System - Replacement 10/99 DM

Applicability: Model PC-12 and PC-12/45 aircraft up to and including MSN180. Requirement: Replace the Stick Pusher Capstan and Servo in accordance with Pilatus Service

Bulletin No.22-003 dated 24 June 1999.

Note: FOCA AD HB 99-406 dated 16 August 1999 refers.

Compliance: Within four months of the effective date of this Directive.

This Airworthiness Directive becomes effective on 25 August 1999.

Background: Due to manufacturing tolerances it has been found that the original model stick pusher system can input higher control column forces than required by design. This Directive introduces a modified Stick Pusher Capstan and Servo to ensure that control column forces stay within design limits.

Source text

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

1 AD/PC-12/20 - Stick Pusher System - Replacement