{"id":"F2006B06157","name":"AD/PC-6/7 - Tail Plane Hinge Bracket - Inspection","slug":"ad-pc-6-7-tail-plane-hinge-bracket-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46966,"registerId":"commonwealth-F2006B06157-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PC-6/7 - Tail Plane Hinge Bracket - Inspection","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-6/7 Tail Plane Hinge Bracket - Inspection 3/66\n\nApplicability: All models. Document: Pilatus SB No. 40.\n\nCompliance: At intervals not exceeding 100 hours time in service after 15 April 1966.\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":1,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive focused specifically on a known mechanical issue with a particular aircraft type. It has not expanded beyond its original purpose of mandating periodic inspection of the tail plane hinge bracket."},"complexity_factors":["Extremely short document (under 100 words of substantive content)","No defined terms section","No cross-references to other legislation beyond basic citation of Civil Aviation Regulations 1998","Simple, unambiguous compliance requirement (single time interval, single action)","No conditional logic, exceptions, or nested provisions","Single applicability criterion (all models)","Single source document referenced (Pilatus Service Bulletin No. 40)"],"plain_english_summary":"This is an **Airworthiness Directive** (a mandatory safety order) issued by Australia's Civil Aviation Safety Authority for **Pilatus Porter PC-6 aircraft**.\n\n**What it does:**\n- Requires owners and operators to **inspect the tail plane hinge bracket** (a structural component that connects the tail to the fuselage)\n- Mandates this inspection **every 100 hours of flight time** after 15 April 1966\n\n**Who it affects:**\n- Anyone who owns or operates any model of Pilatus PC-6 aircraft in Australia\n\n**Why it matters:**\n- Hinge bracket failures can cause **loss of aircraft control** and potentially fatal accidents\n- This directive forces proactive maintenance to catch cracks or wear before they become dangerous\n- Compliance is **legally mandatory** — flying without completing these inspections violates civil aviation regulations"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"Based on the text supplied, the scope is a single recurring inspection requirement for all Pilatus PC-6 models, referencing Pilatus SB No. 40 and specifying a 100-hour time-in-service interval after 15 April 1966. There is no indication in the provided text that the scope has been altered from that original statement."},"complexity_factors":["Very short directive with a single, straightforward requirement (inspection) rather than multiple obligations.","Clear applicability statement: 'All models' reduces ambiguity about coverage.","Compliance interval is explicit and simple: every 100 hours TIS after a specific date.","Technical detail and inspection procedure are delegated to an external document (Pilatus SB No. 40), which concentrates complexity off the AD itself.","No exemptions, conditional provisions, or enforcement mechanics reproduced in the text increase simplicity but shift detail to other documents or regulatory practice."],"plain_english_summary":"This Civil Aviation Safety Authority AD requires owners/operators of all Pilatus PC‑6 (Porter) aeroplanes to inspect the tail‑plane hinge bracket per Pilatus Service Bulletin No. 40 at intervals not exceeding 100 hours time‑in‑service, effective after 15 April 1966. Compliance and any repairs are the operator’s responsibility; the AD cites CASA Part 39 as its regulatory basis."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pc-6-7-tail-plane-hinge-bracket-inspection","history":"/api/acts/ad-pc-6-7-tail-plane-hinge-bracket-inspection/history","analysis":"/api/acts/ad-pc-6-7-tail-plane-hinge-bracket-inspection/analysis","conflicts":"/api/acts/ad-pc-6-7-tail-plane-hinge-bracket-inspection/conflicts","importantCases":"/api/acts/ad-pc-6-7-tail-plane-hinge-bracket-inspection/important-cases","documents":"/api/acts/ad-pc-6-7-tail-plane-hinge-bracket-inspection/documents"}}