{"id":"F2006B08249","name":"AD/CESSNA 337/3 - Open Wire Aerial Installation - Modification","slug":"ad-cessna-337-3-open-wire-aerial-installation-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115518,"registerId":"commonwealth-F2006B08249-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 337/3 - Open Wire Aerial Installation - 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)  Cessna 337 Series Aeroplanes\n\n \n\nAD/CESSNA 337/3 Open Wire Aerial Installation - Modification 8/66\n\nApplicability: All models fitted with bakelite aerial standoff mast, Cessna P/N 0411217 which have aerials rigged in a manner which applies a side load to the mast.\n\n \n\nRequirement: Re-rig aerials to remove any side load from the mast or replace the mast with one of a type suitable for the loads applied.\n\n \n\nNote: Rex Aviation mast comprising rod P/N RA483 and bracket P/N RA482-A or RA482-B is a suitable replacement.\n\n \n\nCompliance: Within 300 hours time in service after 15 August 1966.\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":1371},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is a targeted safety directive addressing a specific structural defect in a particular aircraft component. It remains confined to its original purpose of ensuring antenna mast integrity on affected Cessna 337 aircraft and has not expanded beyond this technical remediation."},"complexity_factors":["Single page document with no defined terms section","Binary compliance path (two alternative methods to achieve compliance)","No cross-references to other legislation or regulatory parts","Specific applicability limited to one aircraft type and one part number","Simple temporal trigger (300 hours time in service after fixed date)"],"plain_english_summary":"This directive requires owners/operators of Cessna 337s fitted with the brittle bakelite aerial standoff mast (Cessna P/N 0411217) to fix a hazard where sideways loading can snap the mast and detach the aerial in flight. You must either re‑rig the aerial so loads pull straight up or replace the mast (e.g., Rex Aviation rod RA483 with bracket RA482‑A/B). Compliance is due within 300 flight hours after 15 August 1966."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-337-3-open-wire-aerial-installation-modification","history":"/api/acts/ad-cessna-337-3-open-wire-aerial-installation-modification/history","analysis":"/api/acts/ad-cessna-337-3-open-wire-aerial-installation-modification/analysis","conflicts":"/api/acts/ad-cessna-337-3-open-wire-aerial-installation-modification/conflicts","importantCases":"/api/acts/ad-cessna-337-3-open-wire-aerial-installation-modification/important-cases","documents":"/api/acts/ad-cessna-337-3-open-wire-aerial-installation-modification/documents"}}