{"id":"F2006B08264","name":"AD/CESSNA 340/18 - Passenger Seat Installation - Inspection","slug":"ad-cessna-340-18-passenger-seat-installation-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115572,"registerId":"commonwealth-F2006B08264-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 340/18 - Passenger Seat Installation - Inspection","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 340/18 Passenger Seat Installation - Inspection 9/78\n\nApplicability: All model 340 with S/Nos. 340-0001 to 340A-0472.\n\n \n\nDocument: Cessna SL No. ME78-17 (FAA AD 78-13-05 Amdt. 39-3250 refers). Compliance:  Within 100 hours time in service after 30 September 1978.\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":false,"description":"The source text sets a specific, limited scope (specified Cessna 340 serial numbers) and a single compliance requirement (inspection within 100 hours TIS after 30 September 1978). There is no indication in the provided text that the scope was expanded or narrowed from an earlier or different stated intent; the directive consistently identifies who is subject to the requirement (Applicability) and the compliance window (Compliance)."},"complexity_factors":["Narrow scope: applies only to a defined set of serial numbers (Applicability), which reduces legal ambiguity but requires accurate aircraft identification.","Fixed compliance metric: deadline tied to flight hours (100 hours time in service after 30 September 1978) requires accurate logkeeping and scheduling (Compliance).","Cross-reference to external technical documents (Cessna SL No. ME78-17; FAA AD 78-13-05) means the AD does not contain inspection procedures itself (Document), increasing procedural complexity for implementers.","Regulatory embedding: issued as part of the Schedule of Airworthiness Directives under Part 39, so enforcement and remedy mechanisms are governed by that broader regulatory framework (header).","Potential operational complexity: arranging inspections and any subsequent repairs creates coordination and downtime costs for operators, though these are practical rather than legal complexities (Compliance)."],"plain_english_summary":"This airworthiness directive requires inspection of passenger seat installations on specified Cessna 340 aircraft (serials 340‑0001 through 340A‑0472), to be completed within 100 hours time‑in‑service after 30 September 1978. It affects owners/operators (who pay for inspection and any repairs) and maintenance organisations, references Cessna Service Letter ME78‑17 and FAA AD 78‑13‑05 for technical details, and is published and enforced by CASA."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive from 1978 with a narrow, specific purpose (seat inspection). It has not expanded beyond its original scope."},"complexity_factors":["Extremely short document (under 150 words)","Only 2 defined applicability criteria (model type and serial number range)","Single compliance requirement with clear deadline","No nested conditions, exceptions, or cross-references to other legislation sections","Refers to external technical documents for actual inspection procedures rather than embedding them"],"plain_english_summary":"**What this is:** An Airworthiness Directive (AD) — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for specific aircraft.\n\n**What it requires:** Owners and operators of Cessna 340 series aeroplanes (serial numbers 340-0001 through 340A-0472) must inspect their passenger seat installations. This inspection must be completed within 100 hours of flight time after 30 September 1978.\n\n**Why it matters:** Faulty passenger seat installations can fail during turbulence or emergency situations, potentially causing serious injury or death. This directive was issued to catch a specific manufacturing or design defect identified by the manufacturer (Cessna) and the US Federal Aviation Administration (FAA).\n\n**Who must comply:** Anyone operating the affected Cessna 340 aircraft in Australia — including private owners, charter operators, and flying schools. The reference to \"Cessna SL No. ME78-17\" and \"FAA AD 78-13-05\" means operators must follow the detailed inspection procedures in those documents."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-340-18-passenger-seat-installation-inspection","history":"/api/acts/ad-cessna-340-18-passenger-seat-installation-inspection/history","analysis":"/api/acts/ad-cessna-340-18-passenger-seat-installation-inspection/analysis","conflicts":"/api/acts/ad-cessna-340-18-passenger-seat-installation-inspection/conflicts","importantCases":"/api/acts/ad-cessna-340-18-passenger-seat-installation-inspection/important-cases","documents":"/api/acts/ad-cessna-340-18-passenger-seat-installation-inspection/documents"}}