Commonwealth legislation

AD/PC-12/25 - Windshield Heater Operation

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This AD requires operators of specified Pilatus PC-12 / PC-12/45 aeroplanes with certain new windshields to stop using the windshield de‑ice switches in the LIGHT position until an electrical modification is done. It mandates inserting a temporary POH/AFM revision, fitting a placard if missing, and carrying out the Pilatus Service Bulletin (SB 30‑006); completing the SB is the terminating action that allows removal of the temporary revision and placard. Affected aeroplanes are identified by MSN ranges and specific windshield part numbers.

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AIRWORTHINESS DIRECTIVE

View image in the official source

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For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

AD/PC-12/25 Windshield Heater Operation

AD/PC-12/25 Windshield Heater Operation 12/2000 TX

Applicability: 1. All Model PC-12 and PC-12/45 aeroplanes from Manufacturers Serial Number (MSN) 201 up to and including MSN 320, which have the new windshields Pilatus Part Number (P/N) 959.81.10.107 LH and 959.81.10.108 RH (PPG P/N

NP172121-5 LH and NP172121-6 RH) installed, and

All Model PC-12 and PC-12/45 aeroplanes from MSN 101 up to and including MSN 200, in which the old windshields were replaced with the new Pilatus P/N 959.81.10.107 LH and 959.81.10.108 RH (PPG P/N NP172121-5 LH and NP172121-6 RH) windshields.

Note 1: The windshields can be identified by the presence of three imbedded temperature sensors on the outboard edge of the windscreen.

Requirement: 1. Remove Temporary Revision No 14 and insert Temporary Revision No 21 into the Limitations Section (Section 2) of the PC-12 Pilots Operating Handbook (POH/AFM) to include the following statement:

“Operation of the DE ICING LH WSHLD and RH WSHLD switch to the LIGHT position is prohibited”

2. Check if the placard referenced in POH/AFM Temporary Revision No 21 is installed on the DE ICING panel, to the right of the RH WSHLD switch, positioned between the landing gear indicators and the silencer switch. If necessary, install the placard.

3. Modify the windshield de-ice system wires and circuit breakers in accordance with the Accomplishment Instructions of Pilatus Aircraft Ltd PC-12 Service Bulletin (SB) 30-006 dated 22 May 2000.

Incorporation of SB 30-006 constitutes terminating action for Requirements 1 and 2. The POH/AFM Temporary Revision and the placard may be removed after this modification is embodied.

Note 2: FOCA Switzerland AD HB 2000-393 refers.

Compliance: For Requirement 1 - Before 30 October 2000.

Source text

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

AIRWORTHINESS DIRECTIVE AIRWORTHINESS DIRECTIVE

AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

AD/PC-12/25 Windshield Heater Operation AD/PC-12/25 Windshield Heater Operation 12/2000 TX

AD/PC-12/25 Windshield Heater Operation 12/2000 TX

NP172121-5 LH and NP172121-6 RH) installed, and

All Model PC-12 and PC-12/45 aeroplanes from MSN 101 up to and including MSN 200, in which the old windshields were replaced with the new Pilatus P/N 959.81.10.107 LH and 959.81.10.108 RH (PPG P/N NP172121-5 LH and NP172121-6 RH) windshields.

Note 1: The windshields can be identified by the presence of three imbedded temperature sensors on the outboard edge of the windscreen.

“Operation of the DE ICING LH WSHLD and RH WSHLD switch to the LIGHT position is prohibited”

2. Check if the placard referenced in POH/AFM Temporary Revision No 21 is installed on the DE ICING panel, to the right of the RH WSHLD switch, positioned between the landing gear indicators and the silencer switch. If necessary, install the placard.

3. Modify the windshield de-ice system wires and circuit breakers in accordance with the Accomplishment Instructions of Pilatus Aircraft Ltd PC-12 Service Bulletin (SB) 30-006 dated 22 May 2000.

Incorporation of SB 30-006 constitutes terminating action for Requirements 1 and 2. The POH/AFM Temporary Revision and the placard may be removed after this modification is embodied.