{"id":"F2006B06118","name":"AD/PC-6/16 - Battery Installation - Modification","slug":"ad-pc-6-16-battery-installation-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46880,"registerId":"commonwealth-F2006B06118-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PC-6/16 - Battery Installation - Modification","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Pilatus Porter PC-6 Series Aeroplanes\n\n \n\nAD/PC-6/16 Battery Installation - Modification N/K\n\nApplicability: All models PC-6/340 and PC-6/350. Document:  Pilatus SB No. 34.\n\nCompliance: Before 1 November 1967.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive focused specifically on battery installation modifications for two specific aircraft models. It has not expanded beyond its original narrow safety purpose."},"complexity_factors":["Extremely short document (under 100 words of substantive content)","Only 2 defined applicability criteria (specific aircraft models)","Single compliance requirement with fixed deadline","No cross-references to other legislation beyond the parent Civil Aviation Regulations 1998","No conditional logic or exceptions","Refers to external technical document (Pilatus SB No. 34) for actual implementation details"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order — issued by Australia's Civil Aviation Safety Authority (CASA) for specific Pilatus Porter aircraft models (PC-6/340 and PC-6/350).\n\n**What it requires:**\n- Aircraft owners/operators must modify the battery installation on these planes\n- The modification must follow the instructions in **Pilatus Service Bulletin No. 34** (a technical notice from the manufacturer)\n- The work must be completed **before 1 November 1967**\n\n**Who it affects:**\n- Owners and operators of Pilatus PC-6/340 and PC-6/350 aircraft registered in Australia\n- Maintenance engineers working on these aircraft\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety requirements. If you don't comply, you cannot legally fly the aircraft. This particular directive addresses battery installation issues — likely fire risk, electrical faults, or structural concerns that could endanger flight safety. The 1967 compliance date indicates this is a historical directive for older aircraft still in service."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The text does not indicate any change in scope from an earlier or original instrument. It sets a clear, narrow scope — all Pilatus PC-6/340 and PC-6/350 — and prescribes a single action (battery installation modification) to be completed by a specified date, referencing Pilatus SB No. 34 for the technical method. No amendment, extension, narrowing, or expansion language appears in the provided text."},"complexity_factors":["Narrow, single requirement: a single modification to battery installation is mandated (Applicability; AD title).","Limited textual detail: the AD itself gives no technical steps and instead points to Pilatus SB No. 34 for implementation details (Document).","Dependence on an external document: implementers must locate and follow Pilatus SB No. 34 to comply (Document).","Fixed compliance deadline: a firm date is imposed (Compliance), creating a timing constraint for owners/operators.","Lack of stated rationale or enforcement detail: the directive does not specify reasons, cost allocation, verification, exemptions, or penalties in the provided text, which increases practical uncertainty for implementers."],"plain_english_summary":"This document is an Airworthiness Directive labelled AD/PC-6/16 issued under the Civil Aviation Safety Authority schedule of airworthiness directives. Mechanically, it mandates a modification to the battery installation on certain Pilatus Porter PC-6 aeroplanes. Key particulars in the text: Applicability — all PC-6/340 and PC-6/350 aircraft (Applicability); the technical instructions for the modification are given in Pilatus Service Bulletin No. 34 (Document); and the action must be completed before 1 November 1967 (Compliance).\n\nWho it affects and who decides\n- The directive applies to operators/owners of Pilatus PC-6/340 and PC-6/350 aeroplanes (Applicability). \n- The Civil Aviation Safety Authority is the issuing authority (header: Schedule of Airworthiness Directives).\n- The technical method to comply is delegated to the manufacturer’s service bulletin (Pilatus SB No. 34) rather than described in the directive itself (Document).\n\nWhat behaviour changes and what is required\n- Operators/owners must have the battery installation modified in accordance with Pilatus SB No. 34 by the compliance date (Compliance; Document). The AD does not include the step‑by‑step modification details in the text; it points to the service bulletin for those details (Document).\n\nStated rationale and what the text does not say\n- The AD text provided does not state an explicit reason, safety finding, or incident that prompted the directive. The text simply identifies the action (Battery Installation - Modification) and the method reference (Pilatus SB No. 34). The directive does not specify who bears the cost, how compliance will be verified, any exemptions, or enforcement measures.\n\nPractical implications, trade-offs and implementation points (source‑grounded)\n- Cost and decision allocation: The AD requires action by the operators/owners of the affected aircraft (Applicability; Compliance). The text does not state who pays for parts, labour, or any downtime; therefore those economic burdens fall to the parties required to comply unless other arrangements exist outside the text. \n- Implementation mechanics: Compliance depends on following Pilatus SB No. 34 for the modification instructions (Document). Because the AD does not include technical detail, operators must obtain and follow that bulletin to implement the change. \n- Timing and operational impact: The AD imposes a firm compliance date (before 1 November 1967). The text does not say whether aircraft may continue in service pending modification, nor whether extensions or alternative actions are permitted. \n- Regulatory discretion and transparency: The directive is short and prescriptive in scope but omits explanatory material in the included text (no stated rationale, no enforcement or exemption language). This places reliance on the referenced service bulletin and on the issuing authority’s broader regulatory procedures for enforcement or further guidance.\n\nBecause the source text is limited to the items above (applicability, referenced document, compliance date), any further conclusions about safety benefits, specific costs, enforcement practice, or market effects are not stated in the document and would require additional material (for example, the referenced Pilatus SB No. 34 or accompanying administrative records)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pc-6-16-battery-installation-modification","history":"/api/acts/ad-pc-6-16-battery-installation-modification/history","analysis":"/api/acts/ad-pc-6-16-battery-installation-modification/analysis","conflicts":"/api/acts/ad-pc-6-16-battery-installation-modification/conflicts","importantCases":"/api/acts/ad-pc-6-16-battery-installation-modification/important-cases","documents":"/api/acts/ad-pc-6-16-battery-installation-modification/documents"}}