{"id":"F2006B07386","name":"AD/TBM 700/37 - Engine Controls - Propeller and Fuel control cables.","slug":"ad-tbm-700-37-engine-controls-propeller-and-fuel-control-cables","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":49561,"registerId":"commonwealth-F2006B07386-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/TBM 700/37 - Engine Controls - Propeller and Fuel control cables.","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Safety Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \n\nAIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CASR 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\nAerospatiale (Socata) TBM 700 Series Aeroplanes\n\nAD/TBM 700/37 Engine Controls \\- Propeller and\n\nFuel Control Cables\n\n  \n13/2004\n\nDM\n\nApplicability: EADS SOCATA TBM 700 aircraft Serial Number (S/N) 285 to 304 and S/N 307\\. Requirement: 1. Comply with the operational procedures detailed in paragraph A of\n\nAccomplishment Instructions of EADS SOCATA Alert Service Bulletin (ASB)\n\nNo. 70-123 or later DGAC approved revisions.\n\n2. Check the batch number identified on the control cables and carry out replacement of the cables as necessary as detailed in paragraph B of the Accomplishment Instructions EADS SOCATA ASB No. 70-123.\n\nNote: DGAC AD UF-2004-175 EASA approval number 2004-10823 dated 27 October 2004 refers.\n\nCompliance: For Requirement 1: Prior to the next flight after the effective date of this Directive. For Requirement 2: Within 25 flight hours after the effective date of this Directive. This Airworthiness Directive becomes effective on 10 November 2004.\n\nBackground: The manufacturer has advised that there have been failures of control cables due to incorrect crimping during manufacture. A failure in the crimp could lead to a reduction in the propeller RPM during flight.\n\n![Signature of James Coyne Delegate of the Civil Aviation Safety Authority](image.002.png)  \n\nJames Coyne\n\nDelegate of the Civil Aviation Safety Authority 29 October 2004\n\n![](image.001.png)\n\nThe above AD is notified in the Commonwealth of Australia Gazette on 10 November 2004.\n\n  \n\nPage 1 of 1","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a targeted safety directive addressing a specific manufacturing defect in a limited aircraft population. It has not expanded beyond its original purpose of mandating corrective action for faulty control cables."},"complexity_factors":["Very short document (1 page)","Only 2 substantive requirements with clear deadlines","Minimal defined terms (only standard aviation abbreviations like S/N, ASB, DGAC)","No nested exceptions or conditional logic","Single cross-reference to manufacturer service bulletin (ASB 70-123)","Clear, linear structure: Applicability → Requirement → Compliance → Background"],"plain_english_summary":"This is an **Airworthiness Directive** — a mandatory safety order issued by Australia's aviation regulator (CASA) requiring specific fixes to aircraft.\n\n**What it does:**\nOrders owners and operators of certain **EADS SOCATA TBM 700 aeroplanes** (specific serial numbers 285–304 and 307) to take immediate action on their **engine control cables**.\n\n**Why it matters:**\nThe manufacturer discovered that some **propeller and fuel control cables** were incorrectly crimped during manufacturing. A failed crimp could cause the propeller to lose RPM during flight — a serious safety risk.\n\n**What must be done:**\n- **Immediately:** Follow new operational procedures before the next flight (to manage the risk)\n- **Within 25 flight hours:** Inspect the cables to find their batch numbers, and replace any faulty ones\n\n**Who it affects:**\nAnyone who owns, operates, or maintains the specific TBM 700 aircraft listed. Non-compliance is illegal — these directives are enforceable under civil aviation law."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD stays within the original, safety‑focused purpose: correct a manufacturing defect in control cables that could reduce propeller RPM in flight. It does not broaden into unrelated regulatory areas, impose ongoing operational constraints beyond the inspection/replacement and short‑term operational procedures, or extend to aircraft beyond the listed serial numbers. The instrument delegates procedural detail to ASB No. 70‑123 but does not change the scope of the safety remedy beyond the defect remediation described in the Background."},"complexity_factors":["Short, single‑page AD with two discrete requirements","One narrow applicability group: TBM 700 S/N 285–304 and 307","Two clear compliance timeframes (prior to next flight; within 25 flight hours)","Single external cross‑reference: EADS SOCATA ASB No. 70‑123 (plus DGAC/EASA approvals)","No nested exceptions or multiple conditional branches","Limited technical detail delegated to the ASB rather than embedded in the AD"],"plain_english_summary":"**What this instrument does (mechanically)\n\n- Applies to EADS SOCATA TBM 700 aeroplanes with serial numbers 285–304 and 307. (See \"Applicability\".)\n- Requires two actions:\n  - Requirement 1: Follow the operational procedures set out in paragraph A of EADS SOCATA Alert Service Bulletin (ASB) No. 70‑123 (or later DGAC‑approved revisions). This must be done before the next flight after the AD becomes effective.\n  - Requirement 2: Inspect the batch number on the propeller and fuel control cables and replace any cables required by paragraph B of the ASB. This inspection/replacement must be completed within 25 flight hours of the AD taking effect.\n- Cross‑references: the AD implements the ASB No. 70‑123 and notes related French (DGAC) and EASA approvals.\n\nWhy the rule was made (official rationale)\n\n- The manufacturer reported that some control cables were incorrectly crimped during manufacture. Faulty crimps can lead to a control‑cable failure and a reduction in propeller RPM in flight. The AD is an operational/maintenance requirement intended to correct that unsafe condition (see \"Background\").\n\nWho this affects and who pays\n\n- Directly affected: owners/operators of the listed TBM 700 serial numbers, and the maintenance organisations that service those aircraft.\n- Who pays: aircraft owners/operators will bear the cost of inspections, any necessary replacement cables, and the labour/time to install parts. The AD does not itself state whether the manufacturer will supply free replacements or warranty support; operators must rely on the manufacturer's ASB and any commercial arrangements.\n\nHow it changes behaviour (concrete mechanisms)\n\n- Operators must implement short‑term operational procedures prior to the next flight (e.g., checks or limitations specified in paragraph A of the ASB).\n- Maintenance personnel must check cable batch numbers and replace cables that match the problematic batches within 25 flight hours, per paragraph B of the ASB.\n- Aircraft may be temporarily grounded or have limited use until inspections/replacements are complete.\n\nCosts, incentives and trade‑offs\n\n- Concentrated benefits: operators of the affected serial numbers receive the safety benefit of reduced risk of in‑flight propeller RPM loss.\n- Concentrated costs: those same operators face immediate inspection and replacement costs, plus possible downtime. If replacement cables are scarce, downtime may increase.\n- Manufacturer incentives: the ASB and the AD create a clear demand for replacement parts. Whether the manufacturer absorbs replacement cost affects operator incentives; the AD itself does not set compensation.\n- Implementation risks: timely availability of replacement parts, quality control in replacement parts, and accurate identification of batch numbers are key to successful remediation. Administrative burden is low but time‑sensitive (prior to next flight for Requirement 1; within 25 flight hours for Requirement 2).\n\nSources and instruction authority\n\n- The AD is issued under subregulation 39.1(1) of CASR 1998 and directs compliance with EADS SOCATA ASB No. 70‑123 (or later DGAC‑approved revisions). The AD notes DGAC AD UF‑2004‑175 and EASA approval 2004‑10823.\n\nNet practical effect\n\n- Short, targeted safety requirement for a limited set of TBM 700 serial numbers: immediate operational mitigation before the next flight and a follow‑up batch inspection and replacement programme within 25 flight hours, relying on the manufacturer's ASB for procedural detail.\n\n(References in this summary: \"Applicability\", \"Requirement 1\", \"Requirement 2\", \"Compliance\" and \"Background\" sections of the AD.)"}},"importantCases":[],"_links":{"self":"/api/acts/ad-tbm-700-37-engine-controls-propeller-and-fuel-control-cables","history":"/api/acts/ad-tbm-700-37-engine-controls-propeller-and-fuel-control-cables/history","analysis":"/api/acts/ad-tbm-700-37-engine-controls-propeller-and-fuel-control-cables/analysis","conflicts":"/api/acts/ad-tbm-700-37-engine-controls-propeller-and-fuel-control-cables/conflicts","importantCases":"/api/acts/ad-tbm-700-37-engine-controls-propeller-and-fuel-control-cables/important-cases","documents":"/api/acts/ad-tbm-700-37-engine-controls-propeller-and-fuel-control-cables/documents"}}