{"id":"F2006B10002","name":"AD/FU24/55 - Oil Pressure Gauge Line - Fitment of Restrictor","slug":"ad-fu24-55-oil-pressure-gauge-line-fitment-of-restrictor","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55359,"registerId":"commonwealth-F2006B10002-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/FU24/55 - Oil Pressure Gauge Line - Fitment of Restrictor","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)  Airparts (NZ) Ltd. FU 24 Series Aeroplanes\n\n \n\nAD/FU24/55 Oil Pressure Gauge Line - Fitment of Restrictor 7/79\n\nApplicability: All model FU24-950.\n\n \n\nDocument: Aerospace Service Letter No. ASL/FU/74-3. Compliance: Within 200 hours time in service after 31 July 1979.\n\nBackground: This Directive is issued to prevent oil loss due to the oil pressure gauge line failure.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\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":1051},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive remains tightly focused on its original purpose: remedying a specific mechanical defect (oil line failure) in a specific aircraft type. It has not expanded beyond this narrow safety scope."},"complexity_factors":["Single operative requirement (fit restrictor)","No defined terms section","No cross-references to other legislative provisions","Clear, unambiguous applicability (single aircraft model)","Simple compliance deadline with no exceptions or extensions"],"plain_english_summary":"**What this does:** This is a safety instruction for owners and operators of specific Fletcher agricultural aircraft (the FU24-950 model).\n\n**What you must do:** Install a **restrictor** (a small valve that limits fluid flow) on the oil pressure gauge line. This prevents the engine from losing all its oil if the gauge line breaks or comes loose.\n\n**Who it affects:** Anyone operating Airparts (NZ) Ltd. FU24-950 aeroplanes.\n\n**Deadline:** You must complete this modification within **200 hours of flight time** after 31 July 1979 (note: this is a historical directive from 1979).\n\n**Why it matters:** Without this restrictor, a failed oil line could drain the engine's oil supply, causing catastrophic engine failure during flight."}},"importantCases":[],"_links":{"self":"/api/acts/ad-fu24-55-oil-pressure-gauge-line-fitment-of-restrictor","history":"/api/acts/ad-fu24-55-oil-pressure-gauge-line-fitment-of-restrictor/history","analysis":"/api/acts/ad-fu24-55-oil-pressure-gauge-line-fitment-of-restrictor/analysis","conflicts":"/api/acts/ad-fu24-55-oil-pressure-gauge-line-fitment-of-restrictor/conflicts","importantCases":"/api/acts/ad-fu24-55-oil-pressure-gauge-line-fitment-of-restrictor/important-cases","documents":"/api/acts/ad-fu24-55-oil-pressure-gauge-line-fitment-of-restrictor/documents"}}