{"id":"F2006B06702","name":"AD/S-76/2 - Engine Oil Filler Service Door - Modification","slug":"ad-s-76-2-engine-oil-filler-service-door-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114512,"registerId":"commonwealth-F2006B06702-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/S-76/2 - Engine Oil Filler Service Door -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)  Sikorsky S-76 Series Helicopters\n\n \n\nAD/S-76/2 Engine Oil Filler Service Door - Modification 9/79\n\nApplicability: All model S76 with S/Nos. SS Nos. 76005 to 76007, SS Nos. 760001 to 760014 and 760016.\n\n \n\nDocument: Sikorsky CSB No. 76-53-3.\n\n \n\nCompliance: Unless already accomplished, within 100 hours time in service after 30 September 1979.\n\n \n\nBackground: The manufacturer advises that it is essential to provide a back up method of securing the engine oil filler service door.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\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":1441},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive maintains a precise, narrow scope limited to the specific modification of engine oil filler service doors on explicitly listed Sikorsky S-76 helicopter serial numbers. There is no evidence of scope expansion beyond the original aviation safety purpose."},"complexity_factors":["Single-page document with one specific requirement","No defined terms or interpretation section","Clear applicability limited to enumerated serial numbers only","No conditional logic, exceptions, or nested provisions","Straightforward compliance deadline with single alternative (already accomplished)"],"plain_english_summary":"**What this is:** A mandatory safety modification (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority for specific Sikorsky S-76 helicopters.\n\n**Who it affects:** Owners and operators of S-76 helicopters with serial numbers 76005 to 76007, 760001 to 760014, and 760016.\n\n**What it requires:** You must modify the **engine oil filler service door** to add a backup method of securing it. This means installing an additional way to keep the door closed beyond the original latch or lock.\n\n**When to comply:** Within 100 hours of flight time after 30 September 1979, unless you've already done the modification.\n\n**Why it matters:** The manufacturer (Sikorsky) determined that the original single method of securing the oil filler door wasn't safe enough. If the door opens in flight, it could cause engine damage or failure. This directive ensures a failsafe mechanism exists to prevent that."}},"importantCases":[],"_links":{"self":"/api/acts/ad-s-76-2-engine-oil-filler-service-door-modification","history":"/api/acts/ad-s-76-2-engine-oil-filler-service-door-modification/history","analysis":"/api/acts/ad-s-76-2-engine-oil-filler-service-door-modification/analysis","conflicts":"/api/acts/ad-s-76-2-engine-oil-filler-service-door-modification/conflicts","importantCases":"/api/acts/ad-s-76-2-engine-oil-filler-service-door-modification/important-cases","documents":"/api/acts/ad-s-76-2-engine-oil-filler-service-door-modification/documents"}}