Commonwealth legislation

AD/PC-12/14 - No. 2 Generator Cut-Out Relay

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Commonwealth

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legislative instrument

Plain English Summary

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This directive requires owners/operators of Pilatus PC‑12 and PC‑12/45 aeroplanes (serials 101–180) to install a cut‑out relay in the second‑generator circuit, following Pilatus Service Bulletin 24‑009, to ensure automatic isolation during over‑voltage events reported by FOCA. Issued by CASA under the Civil Aviation Regulations, it became effective 25 Feb 1999 and must be complied with by 30 Apr 1999; operators are responsible for costs and scheduling.

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AD/PC-12/14 - No. 2 Generator Cut-Out Relay

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-12/14 No. 2 Generator Cut-Out Relay 2/99

Applicability: Model PC-12 and PC-12/45 aeroplanes with Manufactures Serial Numbers 101 to 180 inclusive.

Requirement: If not previously accomplished, install a cut-out relay in the second generator electrical circuit in accordance with Pilatus Aircraft Ltd PC-12 Service Bulletin 24- 009 dated 23 September 1998.

Note: FOCA Switzerland AD HB 98-537 refers.

Compliance: Prior to 30 April 1999.

This Airworthiness Directive becomes effective on 25 February 1999.

Background: FOCA has reported occurrences of over-voltage where the over-voltage protection of the second generator was found not to automatically disconnect the second generator from the electrical system. This Directive requires the installation of a cut-out relay, controlled by the voltage control unit, which ensures that the second generator is isolated automatically should a faulty condition occur.

Source text

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

1 AD/PC-12/14 - No. 2 Generator Cut-Out Relay