{"id":"F2006B10601","name":"AD/HU 269/32 Amdt 1 - Tail Rotor Gearbox - Inspection and/or Replacement","slug":"ad-hu-269-32-amdt-1-tail-rotor-gearbox-inspection-and-or-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":116465,"registerId":"commonwealth-F2006B10601-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/HU 269/32 Amdt 1 - Tail Rotor Gearbox - Inspection and/or Replacement","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)  Schweizer (Hughes) 269 Series Helicopters\n\n \n\nAD/HU 269/32\n\nAmdt 1\n\n\nTail Rotor Gearbox - Inspection and/or Replacement\n\n\n6/70\n\n \n\nApplicability: All models fitted with tail rotor gearboxes P/N 269A6027 or 369A5400 with gearbox S/Nos. listed in Hughes SIN No. N-71-1 and Addendum XI.\n\n \n\nDocument: Hughes SIN No. N-71.1 and Addendum XI.\n\n \n\nCompliance: Before achieving 90 hours total component time in service.\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":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":3087},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"This is Amendment 1 to a directive originally issued in 1970 (indicated by '6/70'). While it maintains the original safety focus on tail rotor gearbox integrity, amendments typically update compliance times, applicability, or technical references based on new safety data or operational experience."},"complexity_factors":["Incorporation by reference to external technical document (Hughes SIN N-71-1 and Addendum XI)","Requires tracking of specific component part numbers (P/N 269A6027 or 369A5400) and serial numbers","Amendment status (Amdt 1) indicates version control requirements"],"plain_english_summary":"This is a **mandatory safety order** (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority for certain Schweizer (Hughes) 269 series helicopters.\n\n**What it requires:**\nOwners and operators must inspect or replace specific tail rotor gearboxes (part numbers 269A6027 or 369A5400) that have serial numbers listed in a Hughes Service Information Notice (SIN N-71-1 and Addendum XI).\n\n**Who it affects:**\nAnyone operating these helicopter models fitted with the affected gearboxes.\n\n**When it must be done:**\nBefore the gearbox reaches 90 hours of total flight time (\"total component time in service\").\n\n**Key point:**\nThe actual inspection or replacement steps aren't detailed in this document. Instead, you must follow the technical instructions in the referenced Hughes document, which is incorporated by reference into this directive."}},"importantCases":[],"_links":{"self":"/api/acts/ad-hu-269-32-amdt-1-tail-rotor-gearbox-inspection-and-or-replacement","history":"/api/acts/ad-hu-269-32-amdt-1-tail-rotor-gearbox-inspection-and-or-replacement/history","analysis":"/api/acts/ad-hu-269-32-amdt-1-tail-rotor-gearbox-inspection-and-or-replacement/analysis","conflicts":"/api/acts/ad-hu-269-32-amdt-1-tail-rotor-gearbox-inspection-and-or-replacement/conflicts","importantCases":"/api/acts/ad-hu-269-32-amdt-1-tail-rotor-gearbox-inspection-and-or-replacement/important-cases","documents":"/api/acts/ad-hu-269-32-amdt-1-tail-rotor-gearbox-inspection-and-or-replacement/documents"}}