{"id":"F2006B10462","name":"AD/HS 125/22 - Windscreen De-Icing Hand Pump - Modification","slug":"ad-hs-125-22-windscreen-de-icing-hand-pump-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":116187,"registerId":"commonwealth-F2006B10462-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/HS 125/22 - Windscreen De-Icing Hand Pump - 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)  British Aerospace BAe 125 Series Aeroplanes\n\n \n\nAD/HS 125/22 Windscreen De-Icing Hand Pump - Modification 5/71\n\nThis AD contents has been removed from the listing because the aircraft model is not currently on the register.\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\n \n\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The practical scope of the directive as listed in the Australian Schedule of Airworthiness Directives has been narrowed to nil for the domestic register because the BAe 125 model is not currently on the Australian aircraft register. Mechanically, the AD specified a mandatory modification to the windscreen de‑icing hand pump for BAe 125 series aircraft (AD/HS 125/22). The listing removal note states the AD contents \"has been removed from the listing because the aircraft model is not currently on the register,\" which changes the immediate domestic applicability and compliance obligations (AD listing removal note). If an affected aircraft is later registered in Australia, the regulatory status could be revisited under the same Part 39 mechanism (Part 39 - 105)."},"complexity_factors":["Single, narrowly targeted directive (one aircraft model and one system) reduces substantive legal complexity (AD/HS 125/22).","Procedural placement within Part 39 - 105 (Schedule of Airworthiness Directives) requires cross‑referencing regulatory framework but not multiple overlapping provisions.","Lack of technical detail in the source (no modification procedure, compliance timeframe, or costs specified) lowers legal intricacy but raises operational uncertainty.","Current removal from the listing simplifies immediate application in Australia but creates conditional complexity if affected aircraft are re‑registered (AD listing removal note).","Potential administrative questions (recording compliance, applicability to imported or newly registered aircraft) add modest procedural complexity."],"plain_english_summary":"The instrument is an airworthiness directive requiring a modification to the windscreen de‑icing hand pump on British Aerospace BAe 125 series aircraft, imposing a mandatory maintenance action on owners, operators and approved maintenance organisations. It matters because ADs enforce safety-driven configuration changes; however this AD was removed from CASA’s listing because no BAe 125s are on the Australian register, so no active Australian compliance obligation now."},"kimi_summary":{"content_quality":"rejected","complexity_score":1,"rejection_reason":"This is a withdrawn/removed Airworthiness Directive stub containing no substantive legislative content. The operative requirements have been deleted, leaving only a note explaining why the content was removed. There is no analysable law here — only metadata and an administrative placeholder.","scope_assessment":{"changed":false,"description":"Not applicable — this is a withdrawn directive with no active scope."},"complexity_factors":["Document is a stub/placeholder with substantive content removed","No operative provisions, definitions, or conditional logic present","Single sentence of explanatory text only","No cross-references to other legislation or technical standards","Extremely short (under 100 words of meaningful content)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a safety order issued by Australia's Civil Aviation Safety Authority (CASA) telling aircraft owners they must fix or modify something on their plane.\n\n**What it covers:**\n- **Aircraft type:** British Aerospace BAe 125 series business jets\n- **Specific issue:** The hand pump used for de-icing the windscreen (the pilot's front window)\n- **Required action:** Modification of that pump (referenced as \"5/71\" — likely a modification number from the manufacturer)\n\n**Current status:**\nThis directive has been **removed from active use** because no BAe 125 aircraft are currently registered in Australia. Think of it like a recall notice for a car model that nobody in the country owns anymore — there's no point keeping it on the books.\n\n**Why it matters:**\nAirworthiness Directives are critical safety tools. They exist because something — a design flaw, wear pattern, or incident — suggested this hand pump could fail or cause problems. Even though this particular AD is inactive, it illustrates how aviation safety works: when a potential risk is identified, regulators mandate fixes, and they clean house when the rules no longer apply to anyone."}},"importantCases":[],"_links":{"self":"/api/acts/ad-hs-125-22-windscreen-de-icing-hand-pump-modification","history":"/api/acts/ad-hs-125-22-windscreen-de-icing-hand-pump-modification/history","analysis":"/api/acts/ad-hs-125-22-windscreen-de-icing-hand-pump-modification/analysis","conflicts":"/api/acts/ad-hs-125-22-windscreen-de-icing-hand-pump-modification/conflicts","importantCases":"/api/acts/ad-hs-125-22-windscreen-de-icing-hand-pump-modification/important-cases","documents":"/api/acts/ad-hs-125-22-windscreen-de-icing-hand-pump-modification/documents"}}