{"id":"F2006B10659","name":"AD/HU 369/10 - Main Transmission P/N 369A5100 Series - Modification","slug":"ad-hu-369-10-main-transmission-p-n-369a5100-series-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":116582,"registerId":"commonwealth-F2006B10659-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/HU 369/10 - Main Transmission P/N 369A5100 Series - 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)  McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters\n\n \n\nAD/HU 369/10 Main Transmission P/N 369A5100\n\nSeries - Modification\n\nApplicability: As detailed in the requirement document. Document: Hughes SIN No. HN-56.\n\nCompliance: Within 300 hours time in service after 1 November 1973.\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\n7/73\n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2030},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow scope. It targets a specific mechanical part (main transmission P/N 369A5100 series) on a specific aircraft type (Hughes/Kawasaki 369 series) with a single mandated action. There is no evidence of expansion beyond the original safety intent to address a defined airworthiness issue."},"complexity_factors":["Single, unambiguous compliance requirement with no conditional branches","No defined terms or interpretation sections","Text consists of only three operative elements: applicability, reference document, and deadline","Relies on external technical standard (Hughes SIN HN-56) for substantive content, keeping the legislative text minimal"],"plain_english_summary":"This CASA Airworthiness Directive mandates owners/operators of McDonnell Douglas (Hughes) and Kawasaki 369-series helicopters with main transmissions in the 369A5100 series to modify that transmission per Hughes Service Information Notice HN‑56.  \n\nThe work must be completed within 300 flight hours from 1 November 1973. It’s a legally required safety fix to prevent main-transmission failure and loss of rotor power."}},"importantCases":[],"_links":{"self":"/api/acts/ad-hu-369-10-main-transmission-p-n-369a5100-series-modification","history":"/api/acts/ad-hu-369-10-main-transmission-p-n-369a5100-series-modification/history","analysis":"/api/acts/ad-hu-369-10-main-transmission-p-n-369a5100-series-modification/analysis","conflicts":"/api/acts/ad-hu-369-10-main-transmission-p-n-369a5100-series-modification/conflicts","importantCases":"/api/acts/ad-hu-369-10-main-transmission-p-n-369a5100-series-modification/important-cases","documents":"/api/acts/ad-hu-369-10-main-transmission-p-n-369a5100-series-modification/documents"}}