{"id":"F2006B10608","name":"AD/HU 269/44 - Tail Rotor Control Stop - Inspection","slug":"ad-hu-269-44-tail-rotor-control-stop-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":116479,"registerId":"commonwealth-F2006B10608-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/HU 269/44 - Tail Rotor Control Stop - 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)  Schweizer (Hughes) 269 Series Helicopters\n\n \n\nAD/HU 269/44 Tail Rotor Control Stop - Inspection 8/72\n\nApplicability: Model 269A with S/Nos. 0011 to 0314.\n\n \n\nModel 269A (TH- 55A) with S/Nos. 0315 and subsequent. Model 269B with S/Nos. 0001 to 0457.\n\nModel 269C with S/Nos. 0001 to 0104.\n\n \n\nDocument: Hughes SIN No. N-98.\n\n \n\nCompliance: Within 100 hours time in service after 31 August 1972.\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":1600},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is the original 1972 directive. The scope remains limited to the specific tail rotor control stop inspection on the identified Hughes helicopter models, with no expansion beyond this original safety purpose."},"complexity_factors":["Single, unambiguous compliance requirement (one inspection)","Limited applicability confined to specific aircraft models and serial number ranges","No conditional logic, exceptions, or nested provisions","Only one external reference (Hughes SIN No. N-98)"],"plain_english_summary":"**What it does:** This Airworthiness Directive (AD) mandates a safety inspection of the **tail rotor control stop** — a mechanical component that limits pedal movement — on specific Hughes (Schweizer) 269 series helicopters.\n\n**Who it affects:** Owners and operators of these specific helicopter models and serial numbers:\n- Model 269A (S/N 0011 to 0314)\n- Model 269A (TH-55A) (S/N 0315 and subsequent)\n- Model 269B (S/N 0001 to 0457)\n- Model 269C (S/N 0001 to 0104)\n\n**What must be done:** Inspect the tail rotor control stop in accordance with **Hughes Service Information Notice (SIN) No. N-98** within **100 hours of flight time** after 31 August 1972.\n\n**Why it matters:** This prevents potential mechanical failure of the tail rotor control system, which could cause loss of directional control (yaw authority) and result in a crash."}},"importantCases":[],"_links":{"self":"/api/acts/ad-hu-269-44-tail-rotor-control-stop-inspection","history":"/api/acts/ad-hu-269-44-tail-rotor-control-stop-inspection/history","analysis":"/api/acts/ad-hu-269-44-tail-rotor-control-stop-inspection/analysis","conflicts":"/api/acts/ad-hu-269-44-tail-rotor-control-stop-inspection/conflicts","importantCases":"/api/acts/ad-hu-269-44-tail-rotor-control-stop-inspection/important-cases","documents":"/api/acts/ad-hu-269-44-tail-rotor-control-stop-inspection/documents"}}