{"id":"F2006B07071","name":"AD/SM-260/12 - Canopy Latch Assembly - Modification","slug":"ad-sm-260-12-canopy-latch-assembly-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48824,"registerId":"commonwealth-F2006B07071-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SM-260/12 - Canopy Latch Assembly - 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)  SIAI Marchetti 260 Series Aeroplanes\n\n \n\nAD/SM-260/12 Canopy Latch Assembly - Modification 8/79\n\nApplicability: All models F260, F260B and F260C fitted with canopy latch assembly P/N 260-11- 129-11.\n\n \n\nDocument:  SIAI Marchetti SB No 260B29. Compliance: Before 30 December 1979.\n\nBackground: At airspeeds in the vicinity of VNE (235 KTS) the canopy lifts and inadvertent unlocking of the canopy may occur.\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":1997},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive remains precisely targeted at the specific mechanical defect in SIAI Marchetti 260 series canopy latches and has not expanded beyond its original safety purpose of mandating a hardware modification."},"complexity_factors":["Single, specific applicability clause identifying exact aircraft models and part numbers","No conditional logic, exceptions, or nested provisions","Single mandatory action referencing one external technical document (Service Bulletin)","Minimal legislative cross-referencing"],"plain_english_summary":"**What this is:** A mandatory safety order (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority for specific aircraft owners.\n\n**Who it affects:** Owners and operators of SIAI Marchetti F260, F260B, and F260C aircraft fitted with a specific canopy latch part (Part Number 260-11-129-11).\n\n**What it requires:** You must modify the canopy latch assembly according to the manufacturer's Service Bulletin No. 260B29. This typically involves physical changes to the locking hardware to prevent it from releasing unintentionally.\n\n**Why it matters:** At high speeds near 235 knots (the aircraft's maximum operating speed), the canopy can lift up and unlock by itself. This creates serious risks:\n- The canopy could open unexpectedly in flight\n- Sudden loss of cabin pressure\n- Potential injury to pilots or passengers\n- Possible aircraft damage or loss of control\n\n**Compliance deadline:** The modification had to be completed before 30 December 1979."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sm-260-12-canopy-latch-assembly-modification","history":"/api/acts/ad-sm-260-12-canopy-latch-assembly-modification/history","analysis":"/api/acts/ad-sm-260-12-canopy-latch-assembly-modification/analysis","conflicts":"/api/acts/ad-sm-260-12-canopy-latch-assembly-modification/conflicts","importantCases":"/api/acts/ad-sm-260-12-canopy-latch-assembly-modification/important-cases","documents":"/api/acts/ad-sm-260-12-canopy-latch-assembly-modification/documents"}}