{"id":"F2006B08355","name":"AD/CESSNA 400/72 - Induction Elbow - Replacement","slug":"ad-cessna-400-72-induction-elbow-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115762,"registerId":"commonwealth-F2006B08355-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 400/72 - Induction Elbow - Replacement","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)  Cessna 400 Series Aeroplanes\n\n \n\nAD/CESSNA 400/72 Induction Elbow - Replacement 9/80\n\nApplicability: Model 414A fitted with certain P/N 642232 flexible elbows as detailed in requirement documents.\n\n \n\nDocument: 1. Rolls Royce SB No. T-411; OR 2. T.C.M. SB M80-10; OR 3. Cessna SIL No.\n\nME80-14.\n\n \n\nCompliance: Within 300 hours time in service after 31 July 1980.\n\n \n\nBackground:  This Directive is issued to prevent blockage of inlet manifold by the delaminated inner layer of some P/N 642232 flexible elbows (coloured black, purple and orange). It has been amended to include Cessna SIL No. ME80-14 as an alternative 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","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2004},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow scope — addressing a specific safety defect in specific aircraft parts. The note about amendment to include an alternative technical reference document (Cessna SIL ME80-14) merely provides an additional compliance pathway rather than expanding the regulatory scope."},"complexity_factors":["Single, discrete mechanical action required (replacement of specific part)","Limited applicability to one aircraft model (Cessna 414A) with specific part numbers","Simple conditional logic (three alternative compliance documents)","Single, clear compliance timeframe","No nested definitions or cross-references to other legislation"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — a mandatory safety order issued by the Civil Aviation Safety Authority (CASA) that legally requires aircraft owners to fix a specific mechanical problem.\n\n**What it requires:** Owners of Cessna Model 414A aircraft must replace specific induction elbows (flexible engine air intake parts with part number 642232 that are coloured black, purple, or orange).\n\n**Why it matters:** The rubber inner lining of these elbows can delaminate (peel away), break off, and block the engine's inlet manifold. This blockage can cause engine failure in flight.\n\n**When to comply:** The replacement must be done within 300 hours of flight time after 31 July 1980.\n\n**How to comply:** Aircraft mechanics must follow one of three technical guides:\n* Rolls Royce Service Bulletin T-411; **or**\n* T.C.M. Service Bulletin M80-10; **or**\n* Cessna Service Information Letter ME80-14"}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-400-72-induction-elbow-replacement","history":"/api/acts/ad-cessna-400-72-induction-elbow-replacement/history","analysis":"/api/acts/ad-cessna-400-72-induction-elbow-replacement/analysis","conflicts":"/api/acts/ad-cessna-400-72-induction-elbow-replacement/conflicts","importantCases":"/api/acts/ad-cessna-400-72-induction-elbow-replacement/important-cases","documents":"/api/acts/ad-cessna-400-72-induction-elbow-replacement/documents"}}