{"id":"F2006B08286","name":"AD/CESSNA 340/9 - Exhaust Tailpipe Support Kit - Installation","slug":"ad-cessna-340-9-exhaust-tailpipe-support-kit-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115609,"registerId":"commonwealth-F2006B08286-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 340/9 - Exhaust Tailpipe Support Kit - Installation","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 340 Series Aeroplanes\n\n \n\nAD/CESSNA 340/9 Exhaust Tailpipe Support Kit - Installation 10/75\n\nApplicability: Model 340 with S/Nos. 340-0001 to 340-0150. Document:  Cessna SL ME75-17, Category No. III. Compliance:               Before 1 January 1976.\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":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-limited safety directive from 1975. It has not expanded beyond its original narrow purpose of mandating a specific hardware modification to a specific aircraft model range."},"complexity_factors":["Extremely short document — approximately 100 words of substantive content","Only 4 operative elements: applicability (serial number range), reference document, compliance deadline, and action required","No defined terms section, no cross-references to other legislation, no conditional logic or exceptions","Single, unambiguous compliance action with fixed deadline","Minimal regulatory machinery — essentially a safety bulletin with legal force"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). Think of it as a \"recall notice\" for aircraft, but legally binding.\n\n**What it requires:** Owners and operators of specific Cessna 340 aeroplanes must install an **exhaust tailpipe support kit** — a mechanical fix to prevent the exhaust system from failing or falling off.\n\n**Who it affects:** Only Cessna Model 340 aircraft with serial numbers 340-0001 through 340-0150 (the first 150 planes built).\n\n**The deadline:** The work had to be completed **before 1 January 1976**.\n\n**Why it matters:** Exhaust system failures can cause carbon monoxide leaks into the cabin, fire hazards, or parts falling off in flight. This AD forces a safety upgrade to prevent those risks.\n\n**Key details:**\n- **Legal basis:** Civil Aviation Regulations 1998, Part 39\n- **Technical reference:** Cessna Service Letter ME75-17 (Category III — meaning it's important but not immediately flight-critical)\n- **Compliance category:** Mandatory (not optional)"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The supplied AD text defines a specific, limited scope: installation of an Exhaust Tailpipe Support Kit on Model 340 aircraft with serial numbers 340-0001 to 340-0150, to be completed before 1 January 1976, and refers to Cessna SL ME75-17 for procedure (Applicability; Document; Compliance). There is no information in the provided text indicating the scope has been altered from any prior or original intent."},"complexity_factors":["Very narrow applicability: only Model 340, S/Nos. 340-0001 to 340-0150 (Applicability).","Mandatory fixed deadline creates a binary compliance requirement (Compliance).","Procedural details are not in the AD but delegated to an external service document (Cessna SL ME75-17) (Document), increasing reliance on that external source for implementation.","AD text is brief and contains no stated rationale, cost allocation, enforcement mechanism, or alternative compliance paths, requiring implementers to infer or seek those details elsewhere.","Vintage directive date means practical compliance logistics (access to the referenced document or kit) could be a consideration, but the AD itself does not address logistics."],"plain_english_summary":"This directive mandates installation of an Exhaust Tailpipe Support Kit on Cessna Model 340 aeroplanes S/N 340‑0001 through 340‑0150, to be done per Cessna SL ME75‑17. Compliance is required before 1 January 1976. It affects owners/operators of the listed aircraft, who must obtain the referenced service letter and arrange parts and labor to meet the deadline; the AD itself delegates technical procedure to the Cessna document and does not state funding or exemption details."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-340-9-exhaust-tailpipe-support-kit-installation","history":"/api/acts/ad-cessna-340-9-exhaust-tailpipe-support-kit-installation/history","analysis":"/api/acts/ad-cessna-340-9-exhaust-tailpipe-support-kit-installation/analysis","conflicts":"/api/acts/ad-cessna-340-9-exhaust-tailpipe-support-kit-installation/conflicts","importantCases":"/api/acts/ad-cessna-340-9-exhaust-tailpipe-support-kit-installation/important-cases","documents":"/api/acts/ad-cessna-340-9-exhaust-tailpipe-support-kit-installation/documents"}}