{"id":"F2009L02824","name":"AD/ECUREUIL/37 Amdt 1 - Tail Rotor Control Spider - CANCELLED","slug":"ad-ecureuil-37-amdt-1-tail-rotor-control-spider-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":80091,"registerId":"commonwealth-F2009L02824-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Eurocopter AS 350 (Ecureuil) Series Heli","sectionType":"division","heading":"Eurocopter AS 350 (Ecureuil) Series Helicopters","content":"### Eurocopter AS 350 (Ecureuil) Series Helicopters\n\n| AD/ECUREUIL/37 Amdt 1 | Tail Rotor Control Spider | 8/2009 |\n| --------------------- | ------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                     |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n|              | This AD is cancelled on 30 July 2009.                                                                                                                                                                                                                                          |\n| Background:  | This unique Australian AD specified inspection within 100 hours time in service after July 1987; and on any occasion the tail rotor control spider assembly was installed. Aerospatiale telexes 11185 and 11538, both dated 1987, were relevant. The AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n18 June 2009","sortOrder":0},{"sectionNumber":"AD/ECUREUIL/37 Amdt 1","sectionType":"part","heading":"AD/ECUREUIL/37 Amdt 1","content":"## AD/ECUREUIL/37 Amdt 1","sortOrder":1},{"sectionNumber":"Tail Rotor Control Spider","sectionType":"part","heading":"Tail Rotor Control Spider","content":"## Tail Rotor Control Spider","sortOrder":2},{"sectionNumber":"8/2009","sectionType":"part","heading":"8/2009","content":"## 8/2009","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1970},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This amendment terminates the entire airworthiness directive rather than altering its scope. The original inspection requirement is completely removed, representing a standard administrative sunset rather than a scope expansion or modification."},"complexity_factors":["Single operative provision consisting of one word: 'CANCELLED'","No defined terms, sections, or structural divisions","No conditional logic, exceptions, or cross-references to other legislation (except the instrument being cancelled)","Background provided is purely explanatory, not creating legal obligations"],"plain_english_summary":"This instrument **removes a maintenance requirement** for a specific type of helicopter.\n\n**What changed:**\nOwners of Eurocopter AS 350 (Ecureuil) helicopters previously had to inspect the **tail rotor control spider**—the mechanical part that translates the pilot's foot pedal movements into tail rotor adjustments—under strict time limits. This rule deletes that inspection requirement entirely.\n\n**Why it matters:**\nPilots and maintenance crews no longer need to perform these specific safety checks. The aviation safety authority determined the inspections were no longer necessary, likely because manufacturer service bulletins or design improvements now address the original safety concern.\n\n**Who is affected:**\nOwners, operators, and maintenance organisations responsible for Eurocopter AS 350 series helicopters."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ecureuil-37-amdt-1-tail-rotor-control-spider-cancelled","history":"/api/acts/ad-ecureuil-37-amdt-1-tail-rotor-control-spider-cancelled/history","analysis":"/api/acts/ad-ecureuil-37-amdt-1-tail-rotor-control-spider-cancelled/analysis","conflicts":"/api/acts/ad-ecureuil-37-amdt-1-tail-rotor-control-spider-cancelled/conflicts","importantCases":"/api/acts/ad-ecureuil-37-amdt-1-tail-rotor-control-spider-cancelled/important-cases","documents":"/api/acts/ad-ecureuil-37-amdt-1-tail-rotor-control-spider-cancelled/documents"}}