{"id":"F2006B08743","name":"AD/DAUPHIN/32 - Main Rotor Shaft","slug":"ad-dauphin-32-main-rotor-shaft","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":52001,"registerId":"commonwealth-F2006B08743-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DAUPHIN/32 - Main Rotor Shaft","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)  Eurocopter SA 360 and SA 365 (Dauphin) Series Helicopters\n\n \n\nAD/DAUPHIN/32 Main Rotor Shaft 3/92\n\nApplicability: All model SA 365 helicopters versions C, C1, C2, C3, N, N1 and N2 fitted with main rotor mast on which the manufacturer’s modification AMS 365A 07.62 B 47 or kit No 365A 09.1034 has not been incorporated.\n\n \n\nRequirement: Action in accordance with the Technical Requirements of DGAC AD 91-268-035(B) or 91-267-031(B) as applicable.\n\n \n\nNote: Aerospatiale Service Bulletins SB 05.19 refers to SA 365C and SB 05.29 refers to SA 365N.\n\n \n\nCompliance: As specified in the Requirement documents except the date specified in paragraph 1.1 should read 30 May 1992.\n\n \n\nBackground: Corrosion has been found on the rotor shaft at the lift bearing seal holder.\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":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive addressing a specific mechanical defect in specific aircraft. It has not expanded beyond its original purpose of mandating corrective action for corroded main rotor shafts in Eurocopter Dauphin helicopters."},"complexity_factors":["Short, single-purpose directive (approximately 150 words of substantive content)","Only 2 defined applicability criteria (helicopter models and modification status)","Single cross-reference to external technical documents (French DGAC ADs)","One explicit compliance modification (date substitution)","No nested exceptions or conditional logic beyond the applicability exclusion","Straightforward causal chain: corrosion found → inspection/repair required → deadline set"],"plain_english_summary":"This CASA Airworthiness Directive orders operators of Eurocopter Dauphin helicopters (SA 365 C/C1/C2/C3/N/N1/N2) to inspect and, if needed, repair corrosion found on the main rotor shaft at a bearing seal. It applies unless a specified manufacturer modification kit is fitted, requires following referenced French DGAC service instructions, and includes an Australian deadline (30 May 1992). It prevents catastrophic loss of lift/control from shaft failure."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This directive implements the DGAC requirements for the listed SA 365 variants and does not broaden or narrow the affected aircraft population; its only substantive alteration is to the compliance date (specified as 30 May 1992). Applicability and required actions are otherwise drawn from the referenced DGAC ADs and Aerospatiale service bulletins."},"complexity_factors":["Cross-reference to external DGAC airworthiness directives rather than containing full instructions increases interpretive burden","Reliance on manufacturer service bulletins (SB 05.19 / SB 05.29) which target different model letters","Applicability depends on whether a specific manufacturer modification (AMS 365A 07.62 B 47) or kit (No 365A 09.1034) has been incorporated","Technical work (inspection/repair/replacement of main rotor shaft components) requires certified maintenance capability and parts","A specific compliance-date amendment (paragraph 1.1 set to 30 May 1992) changes timing but not substantive requirements"],"plain_english_summary":"This airworthiness directive requires operators of specified Eurocopter SA 365 (Dauphin) variants that have not had a particular main-rotor mast modification fitted to carry out inspections and any corrective work on the main rotor shaft according to the referenced French DGAC airworthiness directives or Aerospatiale service bulletins. It sets the compliance deadline at 30 May 1992 because corrosion was found at the lift-bearing seal holder. Operators and maintenance organisations must follow the referenced technical documents and meet the compliance date; they bear inspection and repair costs."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dauphin-32-main-rotor-shaft","history":"/api/acts/ad-dauphin-32-main-rotor-shaft/history","analysis":"/api/acts/ad-dauphin-32-main-rotor-shaft/analysis","conflicts":"/api/acts/ad-dauphin-32-main-rotor-shaft/conflicts","importantCases":"/api/acts/ad-dauphin-32-main-rotor-shaft/important-cases","documents":"/api/acts/ad-dauphin-32-main-rotor-shaft/documents"}}