{"id":"F2006B03843","name":"AD/BEECH 35/47 - Turbocharger Wastegate","slug":"ad-beech-35-47-turbocharger-wastegate","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43452,"registerId":"commonwealth-F2006B03843-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 35/47 - Turbocharger Wastegate","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)  Beechcraft 35 (Bonanza) Series Aeroplanes\n\n \n\nAD/BEECH 35/47 Turbocharger Wastegate 6/75\n\nApplicability: All model V35TC, V35A-TC and V35B-TC with S/Nos. as listed in Beechcraft SI No. 0710-245, also all model S35, V35, V35A and V35B fitted with Continental TSIO-520-D engines in accordance with STC SA 1035 WE or Beech Drawing No. 35-010023.\n\n \n\nRequirement: Action in accordance with Beechcraft SI No. 0710-245.\n\n \n\nNote: FAA AD 75-01-07 refers.\n\n \n\nCompliance: Within 100 hours time in service after 30 June 1975.\n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The text applies to a defined set of Beechcraft 35/Bonanza variants and to aircraft fitted with Continental TSIO-520-D engines under the listed STC or Beech drawing, and it requires compliance with Beechcraft SI No. 0710-245 within a specified 100‑hour time window after 30 June 1975 (Applicability; Requirement; Compliance). Nothing in the instrument indicates a change to that original stated scope; the directive consistently ties the obligation to the listed models/serial numbers and the referenced service instruction."},"complexity_factors":["Cross-reference to an external manufacturer Service Instruction (Beechcraft SI No. 0710-245) which contains the technical steps but is not reproduced in the AD.","Applicability is serial-number- and configuration-specific (multiple models plus STC/drawing-based captures), requiring operators to check serials and installation records.","Compliance measured in hours time in service with a calendar anchor (after 30 June 1975) requires operators to track flight hours and schedule work within a defined window.","External reference to FAA AD increases the number of documents to consult to understand the regulatory background.","The AD prescribes the outcome (comply with SI) but leaves implementation scheduling and commercial arrangements to operators and maintenance providers, creating practical coordination complexity."],"plain_english_summary":"What this instrument does mechanically\n\n- It requires owners/operators of certain Beechcraft 35/Bonanza variants to carry out the actions set out in Beechcraft Service Instruction No. 0710-245. (Requirement)\n- The AD identifies which aircraft are affected by model and serial number, and it also captures aircraft of related models that have been fitted with Continental TSIO-520-D engines under STC SA 1035 WE or by reference to Beech drawing No. 35-010023. (Applicability)\n- The work must be completed within 100 hours time in service after 30 June 1975. (Compliance)\n- The AD notes that the FAA issued a related AD (FAA AD 75-01-07). (Note)\n\nWho is affected and who decides\n\n- Owners and operators of the listed Beechcraft models and serial numbers are the parties obliged to act. (Applicability)\n- The Civil Aviation Safety Authority has issued the directive; the mandatory technical content to be followed is the manufacturer’s Service Instruction No. 0710-245, which operators must obtain and follow. (Requirement)\n\nWhat behaviour changes and choices are required\n\n- Affected operators must obtain Beechcraft SI No. 0710-245 and carry out the specific inspection/repair/modification tasks described in that SI on the listed aircraft. (Requirement)\n- Operators must track time in service so the required work is completed within the 100-hour window after 30 June 1975. (Compliance)\n\nWho pays and what are the direct costs\n\n- Owners/operators bear the direct costs: labour, parts, and any downtime required to perform the SI work. (Requirement, Compliance)\n- Maintenance organisations or certificated mechanics will perform the work according to the Service Instruction; they charge for labour and parts under normal commercial arrangements. (Requirement)\n\nImplementation, compliance burden and risks\n\n- The AD does not reproduce the technical steps; it requires following Beechcraft SI No. 0710-245. This makes access to that Service Instruction a practical prerequisite for compliance. (Requirement)\n- The AD sets a fixed calendar-linked compliance window measured in hours in service, so operators must monitor aircraft time and schedule maintenance within that window. (Compliance)\n- Potential implementation risks include availability of the Service Instruction, availability of required parts and qualified maintenance personnel, and aircraft downtime while the work is carried out. (Requirement, Compliance)\n\nTrade-offs, incentives and likely market effects (mechanisms, not value judgements)\n\n- The AD imposes an up‑front compliance cost on affected operators; maintenance providers and parts suppliers are likely to receive demand for the specified work. (Requirement)\n- Because the AD references a manufacturer service instruction rather than prescribing procedures in full, commercial maintenance providers retain discretion over scheduling and pricing of the required work within regulatory limits. (Requirement)\n- The AD’s scope is limited to specifically listed models/serial numbers and to aircraft fitted with the specified engine installation under the stated STC or drawing; this concentrates the compliance obligation on a defined set of operators. (Applicability)\n\nOfficial purpose claims and how they map to costs and incentives\n\n- The AD refers to an FAA AD (Note); the directive therefore presents the required action as a response to a condition identified at the type or component level. (Note)\n- The practical effect of that purpose claim is to shift technical mitigation (inspection/repair/modification) costs onto the owners/operators of the affected aircraft and to create near-term demand for maintenance services and parts. (Requirement, Compliance)\n\nKey references in the instrument\n\n- Applicability: identifies affected models, serial numbers and engine/STC/drawing conditions. (Applicability)\n- Requirement: mandates action in accordance with Beechcraft SI No. 0710-245. (Requirement)\n- Compliance: sets the deadline — within 100 hours time in service after 30 June 1975. (Compliance)\n- Note: cross-reference to FAA AD 75-01-07. (Note)"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive from 1975 addressing a specific mechanical defect. It has not expanded beyond its original scope — it applies only to the specified aircraft and component, with no subsequent amendments or broadening evident in this text."},"complexity_factors":["Single, specific mechanical component (turbocharger wastegate)","Limited applicability — only 7 specific aircraft models/variants","Single compliance action (follow one referenced service instruction)","Simple deadline (100 hours time-in-service after fixed date)","No nested exceptions, conditional logic, or defined terms section","Cross-reference to only one external technical document (Beechcraft SI) and one FAA AD for context","Total length: approximately 150 words"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). Think of it like a compulsory recall notice for aircraft, but with legal force.\n\n**What it does:** It requires owners and operators of specific Beechcraft Bonanza aeroplanes to inspect or fix a problem with the **turbocharger wastegate** — a valve that controls how much exhaust gas spins the turbocharger. If the wastegate fails, the engine can over-boost (too much pressure), potentially causing engine damage or failure.\n\n**Who it affects:**\n- **Beechcraft V35TC, V35A-TC, and V35B-TC** models with specific serial numbers (listed in Beechcraft Service Instruction 0710-245)\n- **Beechcraft S35, V35, V35A, and V35B** models that have been modified with Continental TSIO-520-D engines under two specific approvals (STC SA 1035 WE or Beech Drawing 35-010023)\n\n**What must be done:** Follow the instructions in **Beechcraft Service Instruction No. 0710-245** — a technical document from the manufacturer detailing the inspection or repair procedure.\n\n**When:** Within **100 hours of flying time** after 30 June 1975.\n\n**Why it matters:** Turbocharger failures at altitude can be catastrophic. This AD prevents engine damage and potential crashes by ensuring the wastegate is properly maintained. The reference to \"FAA AD 75-01-07\" shows this aligns with a US safety order, indicating a known defect pattern.\n\n**Key point:** This is **not optional**. Non-compliance grounds the aircraft — it cannot legally fly until the work is done."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-35-47-turbocharger-wastegate","history":"/api/acts/ad-beech-35-47-turbocharger-wastegate/history","analysis":"/api/acts/ad-beech-35-47-turbocharger-wastegate/analysis","conflicts":"/api/acts/ad-beech-35-47-turbocharger-wastegate/conflicts","importantCases":"/api/acts/ad-beech-35-47-turbocharger-wastegate/important-cases","documents":"/api/acts/ad-beech-35-47-turbocharger-wastegate/documents"}}