{"id":"F2006B10343","name":"AD/HILLER 12/10 - Main Rotor Blades - Inspection and Modification","slug":"ad-hiller-12-10-main-rotor-blades-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56099,"registerId":"commonwealth-F2006B10343-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/HILLER 12/10 - Main Rotor Blades - Inspection and 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)  Hiller UH-12 Series Helicopters\n\n \n\nAD/HILLER 12/10 Main Rotor Blades - Inspection\n\nand Modification\n\n\n12/62\n\n \n\nApplicability: All models UH-12D and E. Document:  Hiller SIL No. 3007A.\n\nCompliance: As detailed in the requirement document.\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":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1720},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument maintains its original narrow scope as a specific safety directive requiring maintenance actions on Hiller UH-12 helicopter main rotor blades."},"complexity_factors":["Extremely brief instrument (delegates all technical content to external document)","No defined terms or interpretation clauses","No conditional logic, exceptions, or nested provisions within the instrument itself","Simple applicability limited to two specific aircraft models"],"plain_english_summary":"This is an **Airworthiness Directive** (AD) — a mandatory legal notice issued by the Civil Aviation Safety Authority (CASA) to fix unsafe conditions in aircraft.\n\n**What it requires**\nOwners and operators of **Hiller UH-12D and UH-12E helicopters** must inspect and modify their main rotor blades according to the technical instructions in **Hiller Service Information Letter (SIL) No. 3007A**.\n\n**Who it affects**\nAnyone who owns, operates, or maintains these specific Hiller helicopter models in Australia.\n\n**Why it matters**\nMain rotor blades are critical to keeping the helicopter in the air. This directive makes compliance with the manufacturer's technical bulletin legally mandatory to prevent potential blade failures."}},"importantCases":[],"_links":{"self":"/api/acts/ad-hiller-12-10-main-rotor-blades-inspection-and-modification","history":"/api/acts/ad-hiller-12-10-main-rotor-blades-inspection-and-modification/history","analysis":"/api/acts/ad-hiller-12-10-main-rotor-blades-inspection-and-modification/analysis","conflicts":"/api/acts/ad-hiller-12-10-main-rotor-blades-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-hiller-12-10-main-rotor-blades-inspection-and-modification/important-cases","documents":"/api/acts/ad-hiller-12-10-main-rotor-blades-inspection-and-modification/documents"}}