Commonwealth legislation

AD/PC-12/17 - Windshield Heat Wiring

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legislative instrument

Plain English Summary

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This Airworthiness Directive orders owners/operators of Pilatus PC‑12 and PC‑12/45 aeroplanes (S/N 101–320) fitted with the specified windshield part numbers to have the windshield heating wiring modified in accordance with Pilatus Service Bulletin 30‑005 before further flight. It responds to reports of overheating in the windshield de‑ice wiring that could cause total electrical power loss; compliance requires grounding affected aircraft until the wiring modification is carried out, incurring maintenance time and costs for operators.

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AD/PC-12/17 - Windshield Heat Wiring

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-12/17 Windshield Heat Wiring 8/99 TX

Applicability: All Model PC-12 and PC-12/45 aeroplanes with Manufacture’s Serial Numbers 101 up to and including 320, equipped with windshields Pilatus Part Number (P/N) 959.81.10.107 LH and 959.81.10.108 RH (PPG P/N NP 172121-5 LH and NP172121-6 RH.

Note: Affected windshields can be identified by the presence of three imbedded temperature sensors on the outboard edge of the windshield.

Requirement: Modify the electrical wiring in accordance with Pilatus PC-12 Service Bulletin 30- 005.

Note: FOCA Switzerland AD HB 99-347 refers.

Compliance: Before further flight.

This Airworthiness Directive becomes effective on 28 June 1999.

Background: FOCA has received several reports of overheating of the windshield de-ice system electrical power supply and temperature sensor wires located between terminal block TB152 and the windshield. This condition, if not corrected could result in total loss of electrical power in the aircraft.

Source text

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

1 AD/PC-12/17 - Windshield Heat Wiring