{"id":"F2006B06121","name":"AD/PC-6/19 - Sliding Door - Modification","slug":"ad-pc-6-19-sliding-door-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46887,"registerId":"commonwealth-F2006B06121-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PC-6/19 - Sliding Door - 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-6/19  Sliding Door - Modification N/K Applicability:              All models with S/nos. 519, 596, 597, 600, 601, 617, 620 621, 622, 623, 626 and 628. Document:               Pilatus SB No. 73.\n\nCompliance: Before 2 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 solely on a sliding door modification for specific aircraft. It has not expanded beyond its original narrow technical purpose."},"complexity_factors":["Extremely short document (under 150 words)","No defined terms section — uses plain technical language","No cross-references to other legislation beyond the parent regulation (Part 39)","Single, unambiguous compliance requirement with clear deadline","Limited applicability (12 specific serial numbers listed explicitly)","No conditional logic, exceptions, or nested provisions"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by the Civil Aviation Safety Authority (CASA) for specific Pilatus Porter PC-6 aircraft.\n\n**What it does:**\n- Requires owners/operators of certain PC-6 aeroplanes to modify the sliding door on their aircraft.\n- The modification must follow instructions in **Pilatus Service Bulletin No. 73** (a technical notice from the manufacturer).\n\n**Who it affects:**\n- Owners and operators of Pilatus PC-6 aircraft with **specific serial numbers**: 519, 596, 597, 600, 601, 617, 620, 621, 622, 623, 626, and 628.\n\n**Why it matters:**\n- Airworthiness Directives are **legally binding safety orders**. They are issued when a safety defect or unsafe condition is discovered in an aircraft type.\n- Compliance is **mandatory** — you cannot legally fly the affected aircraft until the modification is done.\n- The deadline was **before 2 November 1967**, meaning this is a historical directive that applied to aircraft operating in Australia decades ago.\n\n**Key point:** This document is a **safety compliance order**, not a general law. It sits under the Civil Aviation Regulations 1988 (specifically Part 39, which deals with airworthiness directives)."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The document sets a limited and specific requirement: a sliding-door modification for the listed Pilatus PC-6 serial numbers to be accomplished by the stated date, using Pilatus SB No. 73. Nothing in the text indicates a change to that original scope; the AD is narrowly targeted as issued."},"complexity_factors":["Narrow, specific applicability (listed serial numbers) limits scope and reduces systemic complexity.","Clear compliance deadline (Before 2 November 1967) simplifies timing requirements.","Mandatory method reference to Pilatus SB No. 73 shifts technical detail to an external document, creating an implementation dependency.","The AD text lacks an explicit explanation of the safety issue, cost estimates, alternative compliance means, or enforcement details, which adds some operational uncertainty despite overall simplicity.","Historic compliance date and terse wording could complicate archival interpretation or record verification for older fleets."],"plain_english_summary":"This AD mandates a sliding‑door modification on specified Pilatus PC‑6 aeroplanes (listed serial numbers) to be completed per Pilatus SB No. 73 before 2 November 1967. It binds the listed aircraft owners/operators to fund and arrange the work, but the brief text gives no explicit safety rationale, cost estimate, or enforcement details."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pc-6-19-sliding-door-modification","history":"/api/acts/ad-pc-6-19-sliding-door-modification/history","analysis":"/api/acts/ad-pc-6-19-sliding-door-modification/analysis","conflicts":"/api/acts/ad-pc-6-19-sliding-door-modification/conflicts","importantCases":"/api/acts/ad-pc-6-19-sliding-door-modification/important-cases","documents":"/api/acts/ad-pc-6-19-sliding-door-modification/documents"}}