{"id":"F2006B06092","name":"AD/PC-12/3 Amdt 1 - Electrical Wiring","slug":"ad-pc-12-3-amdt-1-electrical-wiring","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46824,"registerId":"commonwealth-F2006B06092-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PC-12/3 Amdt 1 - Electrical Wiring","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nPilatus PC-12 Series Aeroplanes\n\nAD/PC-12/3\n\nAmdt 1\n\n  \nElectrical Wiring 3/97\n\nApplicability: All PC-12 aeroplanes up to and including serial number 140.\n\nRequirement: Unless previously accomplished, modify in accordance with Pilatus Aircraft Ltd PC- 12 Service Bulletin 24-003 Revision 1 dated 18 September 1996.\n\nNote: FOCA Switzerland AD HB 97-002 refers.\n\nCompliance: Prior to 31 March 1997.\n\nThis Amendment takes effect on 27 February 1997.\n\nBackground: The Swiss Federal Office for Civil Aviation (FOCA) has advised that when the\n\nN ESNTL switch is set to AUTO the NON ESSENTIAL BUS may not automatically disconnect from the power distribution system when the BAT/GEN 1 bus tie circuit breaker (CB210) opens. Additionally FOCA has advised that reports have been received of incorrect wiring of the KN-40 Navigation Converter.\n\nThis amendment introduces a revision to the Requirement Document which corrects a wiring error in the original issue of the document.\n\nThe original issue of this Directive, mandated a wiring change, which eliminated the condition whereby the NON ESSENTIAL BUS remained connected, and an inspection of the KN-40 wiring.\n\nThe original issue of this Airworthiness Directive became effective on 7 November 1996.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The amendment corrects a wiring error in the requirement document but does not broaden applicability or add new types of work. Applicability (serial numbers) and the compliance deadline (prior to 31 March 1997) remain as in the original directive (Requirement; Background)."},"complexity_factors":["Technical electrical fix affecting power distribution logic (Background).","Requires compliance with an external manufacturer Service Bulletin (Requirement: Pilatus SB 24-003 Rev 1).","Applies only to a limited serial-number range (Applicability: up to and including serial number 140).","Safety-critical nature increases need for certified maintenance and inspection (Background/Requirement).","Amendment corrects an earlier error in the Requirement document (Background), creating a small document-control dependency.","Cross-reference to Swiss FOCA AD (FOCA HB 97-002) requires alignment with foreign regulator notices."],"plain_english_summary":"Mandates a wiring modification and inspection on Pilatus PC‑12 aeroplanes (serial numbers up to 140) to be done per Pilatus Service Bulletin 24‑003 Revision 1. The change fixes a wiring error that can leave the NON ESSENTIAL BUS connected when the BAT/GEN 1 bus tie breaker opens and corrects KN‑40 Navigation Converter wiring. Operators must arrange and pay for the certified maintenance before 31 March 1997; FOCA AD HB 97‑002 is referenced."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope. It is a technical correction to the requirement document (Service Bulletin reference) to fix a wiring error in the original instructions. It does not expand the applicability to additional aircraft, add new requirements, or extend the compliance timeframe."},"complexity_factors":["Single, specific aircraft type and serial number range (PC-12 up to s/n 140)","Only one mandatory action required (modify per specified Service Bulletin)","Single compliance deadline (prior to 31 March 1997)","Minimal defined terms (only standard aviation abbreviations like 'N ESNTL', 'BAT/GEN 1', 'CB210' which are explained in context)","No nested exceptions or conditional logic — straightforward applicability and requirement","Short length (approximately 200 words)","Clear cross-reference to only one external technical document (Pilatus SB 24-003 Rev 1)"],"plain_english_summary":"Owners and operators of Pilatus PC‑12 aeroplanes (serial numbers ≤140) must complete an electrical wiring modification per Pilatus Service Bulletin 24‑003 Rev 1 by 31 March 1997. The fix corrects a wiring fault that could leave the NON ESSENTIAL BUS energized when CB210 opens (with the N ESNTL switch on AUTO) and rectifies incorrect KN‑40 navigation converter wiring. This Amendment 1 corrects an error in the original instructions."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pc-12-3-amdt-1-electrical-wiring","history":"/api/acts/ad-pc-12-3-amdt-1-electrical-wiring/history","analysis":"/api/acts/ad-pc-12-3-amdt-1-electrical-wiring/analysis","conflicts":"/api/acts/ad-pc-12-3-amdt-1-electrical-wiring/conflicts","importantCases":"/api/acts/ad-pc-12-3-amdt-1-electrical-wiring/important-cases","documents":"/api/acts/ad-pc-12-3-amdt-1-electrical-wiring/documents"}}