{"id":"F2006B06734","name":"AD/S-76/59 Amdt 1 - Tail Rotor Control Rod - Rod Ends","slug":"ad-s-76-59-amdt-1-tail-rotor-control-rod-rod-ends","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114561,"registerId":"commonwealth-F2006B06734-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/S-76/59 Amdt 1 - Tail Rotor Control Rod - Rod Ends","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)  Sikorsky S-76 Series Helicopters\n\n \n\n# AD/S-76/59\n\nAmdt 1\n\nApplicability: All models.\n\n\n# Tail Rotor Control Rod - Rod Ends  9/94 DM\n\n \n\nRequirement: Action in accordance with Sikorsky ASB 76-65-45 Revision A.\n\n \n\nCompliance: Unless already accomplished, at the next scheduled inspection of the tail rotor control rods, or at the next 150 hour inspection after 13 July 1994, whichever occurs first.\n\n \n\nThe effective date of the initial issue of this Directive was 25 May 1994.\n\n \n\nWork in addition to the initial issue is not required if the rod ends were removed from the barrels and any corroded rod ends were replaced during compliance with that issue.\n\n \n\nBackground: Cracking in the exposed threaded end of the control rods, rod ends may be occurring. Failure of a control rod end may result in loss of tail rotor control. Amendment 1 is the result of pitting corrosion found in an Australian aircraft, and of a Revision to the initial issue of the ASB.\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":1639},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"Amendment 1 maintains the original scope (tail rotor control rod inspection for S-76 helicopters) but updates technical requirements to address additional corrosion findings (pitting) discovered in Australian aircraft and incorporates a revised manufacturer service bulletin."},"complexity_factors":["Single discrete maintenance action required","One cross-reference to external technical document (Sikorsky ASB 76-65-45 Rev A)","One simple exemption clause for previously completed work","Limited applicability to single aircraft series (Sikorsky S-76)","Clear, specific compliance timeframe with dual trigger (next inspection OR 150 hours)"],"plain_english_summary":"This mandatory Airworthiness Directive requires Sikorsky S‑76 owners to inspect tail rotor control rod \"rod ends\" for cracking and corrosion per Sikorsky Alert Service Bulletin 76‑65‑45 Rev A and replace any defective parts. Failure can cause loss of tail rotor control and uncontrollable spin.\n\nComply at the next scheduled maintenance or within 150 flight hours after 13 July 1994; prior replacements done under the original 1994 directive are exempt. Amendment 1 adds pitting‑corrosion checks and incorporates the revised manufacturer standard."}},"importantCases":[],"_links":{"self":"/api/acts/ad-s-76-59-amdt-1-tail-rotor-control-rod-rod-ends","history":"/api/acts/ad-s-76-59-amdt-1-tail-rotor-control-rod-rod-ends/history","analysis":"/api/acts/ad-s-76-59-amdt-1-tail-rotor-control-rod-rod-ends/analysis","conflicts":"/api/acts/ad-s-76-59-amdt-1-tail-rotor-control-rod-rod-ends/conflicts","importantCases":"/api/acts/ad-s-76-59-amdt-1-tail-rotor-control-rod-rod-ends/important-cases","documents":"/api/acts/ad-s-76-59-amdt-1-tail-rotor-control-rod-rod-ends/documents"}}