{"id":"F2006B08206","name":"AD/CESSNA 320/27 - Main Landing Gear Down Lock Pin and Set Screw - Inspection","slug":"ad-cessna-320-27-main-landing-gear-down-lock-pin-and-set-screw-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115424,"registerId":"commonwealth-F2006B08206-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 320/27 - Main Landing Gear Down Lock Pin and Set Screw - 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 320 Series Aeroplanes\n\n \n\nAD/CESSNA 320/27 Main Landing Gear Down Lock Pin\n\nand Set Screw - Inspection\n\nApplicability: All models with S/Nos. 320E0001 to 320F0045. Document:  Cessna SL ME76-4.\n\nCompliance: Within 100 hours time in service after 31 August 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\n\n8/76\n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2065},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is the original 1976 directive. The scope remains precisely targeted at the specific mechanical issue (landing gear down lock pins) on the specific aircraft models identified by their serial numbers, with no evidence of expansion into broader operational or airworthiness matters."},"complexity_factors":["Extremely concise single-issue directive (less than 80 words of operative text)","No interpretation section or defined terms","Simple applicability test based only on aircraft serial number ranges","Single compliance requirement with unambiguous deadline","No exceptions, exemptions, or conditional logic pathways"],"plain_english_summary":"**What this is:** An Airworthiness Directive (a mandatory safety order issued by the aviation regulator) requiring owners of specific Cessna aircraft to inspect a critical mechanical part.\n\n**Who it affects:** Owners and operators of Cessna 320 series aeroplanes with serial numbers from 320E0001 through to 320F0045.\n\n**What you must do:** Carry out an inspection of the **main landing gear down lock pin and set screw**. These are mechanical components that lock the wheels in the 'down' position during flight and ensure the landing gear stays put when you’re on the ground.\n\n**When:** You must complete this inspection within 100 hours of flying time (counted from when the engine is running) after 31 August 1976.\n\n**Why it matters:** This directive addresses a specific safety defect to prevent the landing gear from collapsing or failing to lock properly during landing. The inspection follows technical guidance in Cessna Service Letter ME76-4."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-320-27-main-landing-gear-down-lock-pin-and-set-screw-inspection","history":"/api/acts/ad-cessna-320-27-main-landing-gear-down-lock-pin-and-set-screw-inspection/history","analysis":"/api/acts/ad-cessna-320-27-main-landing-gear-down-lock-pin-and-set-screw-inspection/analysis","conflicts":"/api/acts/ad-cessna-320-27-main-landing-gear-down-lock-pin-and-set-screw-inspection/conflicts","importantCases":"/api/acts/ad-cessna-320-27-main-landing-gear-down-lock-pin-and-set-screw-inspection/important-cases","documents":"/api/acts/ad-cessna-320-27-main-landing-gear-down-lock-pin-and-set-screw-inspection/documents"}}