{"id":"F2006B07090","name":"AD/S-PUMA/10 Amdt 2 - Tail Rotor Pitch Change Bearings","slug":"ad-s-puma-10-amdt-2-tail-rotor-pitch-change-bearings","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48854,"registerId":"commonwealth-F2006B07090-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/S-PUMA/10 Amdt 2 - Tail Rotor Pitch Change Bearings","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \n![](image.002.png)  \nEurocopter AS 332 (Super Puma) Series Helicopters\n\nAIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.002.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/S-PUMA/10 Amdt 1 and issues the following AD under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\nAD/S-PUMA/10\n\nAmdt 2\n\n  \nTail Rotor Pitch Change Bearings 5/2001\n\nApplicability: Model AS 332 helicopters versions C, C1, L, and L1 on which the tail rotor pitch change rod is fitted with a bearing part number 330A33.9903.20.\n\nRequirement: Action in accordance with Eurocopter AS 332 Alert Service Bulletin No. 05.00.29 Revision 3.\n\nNote: DGAC AD 1990-230-041(A) R4 refers.\n\nCompliance: At intervals of 250 flight hours or 18 months, whichever occurs first.\n\nThis amendment becomes effective on 17 May 2001.\n\nBackground: The initial issue of this Directive was a one-time inspection in response to a reported bearing seizure.\n\nAmendment 1 reflected subsequent reported seizures that resulted in the inspection becoming repetitive.\n\nAmendment 2 is issued in response to the latest revision of the Requirement document which modifies the operational procedure and the bearing check procedure.\n\nAmendment 1 of this Airworthiness Directive became effective on 31 June 1993.\n\nThe original issue of this Airworthiness Directive became effective on 31 December 1992.\n\n![Signature of David Alan Villiers Delegate of the Civil Aviation Safety Authority](image.003.png)  \n\nDavid Alan Villiers\n\nDelegate of the Civil Aviation Safety Authority 2 April 2001\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 18 April 2001.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"Yes. The original AD was issued as a one-time inspection after a reported bearing seizure. Amendment 1 converted that to a repetitive inspection. Amendment 2 updates the Requirement to Eurocopter Alert Service Bulletin No. 05.00.29 Revision 3 and modifies the operational and bearing-check procedures while retaining the applicability to AS 332 models C, C1, L and L1 fitted with bearing P/N 330A33.9903.20."},"complexity_factors":["Dependence on an external document: compliance is by following Eurocopter AS 332 Alert Service Bulletin No. 05.00.29 Revision 3 (requires access to and interpretation of that bulletin).","Dual compliance interval: requirement triggers on whichever occurs first — 250 flight hours or 18 months (scheduling and tracking burden).","Part-number-specific applicability: applies only to aircraft fitted with bearing P/N 330A33.9903.20 (requires parts/maintenance records check).","Regulatory history: revokes prior AD and implements procedural changes introduced by the revised Requirement (operators must track amendment history).","Operational-procedure change: Amendment 2 modifies both the operational procedure and the bearing-check procedure (may alter maintenance actions compared with earlier revisions)."],"plain_english_summary":"This directive requires operators of Eurocopter AS 332 (Super Puma) models C, C1, L and L1 fitted with tail rotor pitch change bearing P/N 330A33.9903.20 to perform inspections and any corrective actions per Eurocopter AS 332 Alert Service Bulletin No. 05.00.29 Revision 3. Inspections must be done every 250 flight hours or 18 months, whichever is first. The measure replaces earlier ADs following reported bearing seizures and updates the operational and bearing-check procedures."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"The legislation has evolved significantly from its original scope. Initially a one-time inspection (1992), it became a repetitive inspection regime (1993), and now incorporates updated technical procedures (2001). While still focused on the same physical component (tail rotor bearings), the ongoing maintenance burden has expanded from a single check to a permanent, recurring compliance obligation with evolving technical standards."},"complexity_factors":["Very short document (under 400 words)","Only 1 defined applicability criterion (specific helicopter models with specific part number)","Single requirement referencing external technical document (Eurocopter service bulletin)","Simple compliance trigger (time-based: 250 hours OR 18 months)","No nested exceptions or conditional logic","Clear linear structure: Applicability → Requirement → Compliance → Background","Minimal cross-referencing (only to previous AD versions and French aviation authority document)"],"plain_english_summary":"This CASA safety order replaces an earlier order and requires owners/operators of Eurocopter AS 332 (C, C1, L, L1) helicopters fitted with bearing part 330A33.9903.20 to inspect the tail‑rotor pitch‑change bearings per the manufacturer’s service bulletin (Revision 3). Inspections are safety‑critical to prevent bearing seizure and potential loss of control, and must be repeated every 250 flight hours or 18 months, whichever occurs first."}},"importantCases":[],"_links":{"self":"/api/acts/ad-s-puma-10-amdt-2-tail-rotor-pitch-change-bearings","history":"/api/acts/ad-s-puma-10-amdt-2-tail-rotor-pitch-change-bearings/history","analysis":"/api/acts/ad-s-puma-10-amdt-2-tail-rotor-pitch-change-bearings/analysis","conflicts":"/api/acts/ad-s-puma-10-amdt-2-tail-rotor-pitch-change-bearings/conflicts","importantCases":"/api/acts/ad-s-puma-10-amdt-2-tail-rotor-pitch-change-bearings/important-cases","documents":"/api/acts/ad-s-puma-10-amdt-2-tail-rotor-pitch-change-bearings/documents"}}