{"id":"F2006B10576","name":"AD/HU 269/100 Amdt 1 - Clutch Control Spring","slug":"ad-hu-269-100-amdt-1-clutch-control-spring","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":116415,"registerId":"commonwealth-F2006B10576-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/HU 269/100 Amdt 1 - Clutch Control Spring","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)  \nSchweizer (Hughes) 269 Series Helicopters\n\nAD/HU 269/100\n\nAmdt 1\n\n  \nClutch Control Spring 5/95\n\nApplicability: All model 269A, 269A-1, 269B, 269C and all TH55A helicopters. Requirement: Action in accordance with Schweizer Mandatory Service Bulletin B-256-2.\n\nNote: FAA AD 95-03-12 amdt 39-9148 refers and supersedes FAA Priority Letter AD 93-03-01.\n\nCompliance: Unless previously inspected for wear and security in accordance with Schweizer SB B-256-1, carry out Part 1 of the Requirement Document by 28 April 1995.\n\nThereafter, reinspect at intervals not exceeding 100 hours time in service.\n\nBackground: The manufacturer has advised that due to the failure of a clutch control spring assembly on a 269C helicopter, an accident has occurred. This amendment has been raised to incorporate the requirements of the manufacturer’s SB and the later FAA AD.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment maintains the original scope — safety inspection of clutch control springs on specific helicopter models. It updates the technical reference (to SB B-256-2 and FAA AD 95-03-12) but does not expand beyond the original safety purpose."},"complexity_factors":["Very short document (under 200 words)","Only 1 defined term implicitly used ('time in service')","No cross-references to other legislation sections","Simple conditional logic (single deadline with one exception for previously inspected aircraft)","Straightforward compliance structure: one-time action + recurring interval"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order for aircraft. It applies to specific **Schweizer (Hughes) 269 series helicopters** (models 269A, 269A-1, 269B, 269C, and TH55A).\n\n**What it does:**\n- Requires owners/operators to inspect the **clutch control spring assembly** for wear and security\n- Mandates compliance with **Schweizer Mandatory Service Bulletin B-256-2**\n- Sets a **deadline of 28 April 1995** for the initial inspection (unless already done under an earlier bulletin)\n- Requires **follow-up inspections every 100 hours of flight time** thereafter\n\n**Why it matters:**\nA clutch control spring failure caused a helicopter accident. This directive prevents similar accidents by forcing operators to check this specific part regularly. Non-compliance means the aircraft cannot legally fly.\n\n**Key point:** This is an **amendment (Amdt 1)** that updates an earlier directive to align with newer manufacturer guidance and a US Federal Aviation Administration (FAA) safety order."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The amendment updates the earlier directive by incorporating the manufacturer’s Mandatory Service Bulletin B-256-2 and aligning with a later FAA airworthiness directive (Background; Requirement). It imposes a specified initial compliance deadline (28 April 1995) where earlier inspections under SB B-256-1 were not completed, and it sets a recurring reinspection interval of not more than 100 hours time-in-service (Compliance). These additions modify the prior scope by adding specific procedural requirements and timing."},"complexity_factors":["Clear, narrowly focused subject matter (single component: clutch control spring) and limited affected fleet (269 series and TH55A). (Applicability)","Mandate delegates technical detail to an external document (Schweizer Mandatory Service Bulletin B-256-2), requiring operators to obtain and apply that bulletin. (Requirement)","A specific compliance deadline for initial inspections (28 April 1995) and a straightforward recurring inspection interval (every 100 hours TIS). (Compliance)","Cross-reference to FAA material (FAA AD 95-03-12 and earlier FAA Priority Letter), adding an external regulatory linkage to track. (Background)","Operational record-keeping and scheduling requirements implicit in recurring inspections increase administrative steps for operators."],"plain_english_summary":"This instrument mandates recurring inspections of the clutch control spring assembly on specified Schweizer (Hughes) 269-series and all TH55A helicopters, requiring compliance with Schweizer Mandatory Service Bulletin B‑256‑2. It stems from a reported spring failure and incorporates related FAA guidance.\n\nOwners/operators bear the cost and must complete Part 1 by 28 April 1995 if not already done, then reinspect no less often than every 100 hours TIS."}},"importantCases":[],"_links":{"self":"/api/acts/ad-hu-269-100-amdt-1-clutch-control-spring","history":"/api/acts/ad-hu-269-100-amdt-1-clutch-control-spring/history","analysis":"/api/acts/ad-hu-269-100-amdt-1-clutch-control-spring/analysis","conflicts":"/api/acts/ad-hu-269-100-amdt-1-clutch-control-spring/conflicts","importantCases":"/api/acts/ad-hu-269-100-amdt-1-clutch-control-spring/important-cases","documents":"/api/acts/ad-hu-269-100-amdt-1-clutch-control-spring/documents"}}