{"id":"F2006B10637","name":"AD/HU 269/78 - Tail Rotor Pitch Control Link Assembly","slug":"ad-hu-269-78-tail-rotor-pitch-control-link-assembly","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":116538,"registerId":"commonwealth-F2006B10637-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/HU 269/78 - Tail Rotor Pitch Control Link Assembly","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 269/78 Tail Rotor Pitch Control Link Assembly 6/86\n\nDM\n\n \n\nApplicability: All model 269A, 269A-1 and 269C Helicopters.\n\n \n\nRequirement: Action in accordance with Schweizer Service Information Notice No. N198. Compliance:               Within 50 hours time in service after 16 May 1986.\n\nFor spares, before installation in an aircraft.\n\n \n\nBackground:  The inspection and rework procedure called for ensures correct clearance between tail rotor pitch links and pitch control housing assembly.\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":1,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow scope as a specific airworthiness requirement for tail rotor pitch control assemblies on designated Hughes helicopter models. No evidence of expansion beyond the original safety purpose."},"complexity_factors":["Single-page document with no defined terms section","Applies to only three specific aircraft models with no conditional exceptions","One clear compliance action referencing external technical standard (Service Information Notice No. N198)","Simple time-based compliance trigger (50 hours time in service) with no nested conditions"],"plain_english_summary":"Owners, operators, and maintenance/supply personnel for Schweizer (Hughes) 269A, 269A‑1, and 269C helicopters must inspect and modify the tail rotor pitch control link assembly per Schweizer Service Information Notice N198. The AD is mandatory to correct clearance between pitch links and the housing to prevent tail rotor control interference and possible loss of control. Work is required within 50 flight hours after 16 May 1986; spares must be fixed before installation."}},"importantCases":[],"_links":{"self":"/api/acts/ad-hu-269-78-tail-rotor-pitch-control-link-assembly","history":"/api/acts/ad-hu-269-78-tail-rotor-pitch-control-link-assembly/history","analysis":"/api/acts/ad-hu-269-78-tail-rotor-pitch-control-link-assembly/analysis","conflicts":"/api/acts/ad-hu-269-78-tail-rotor-pitch-control-link-assembly/conflicts","importantCases":"/api/acts/ad-hu-269-78-tail-rotor-pitch-control-link-assembly/important-cases","documents":"/api/acts/ad-hu-269-78-tail-rotor-pitch-control-link-assembly/documents"}}