{"id":"F2006B07391","name":"AD/TBM 700/8 - Propeller Control","slug":"ad-tbm-700-8-propeller-control","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":49577,"registerId":"commonwealth-F2006B07391-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/TBM 700/8 - Propeller Control","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)  Aerospatiale (Socata) TBM 700 Series Aeroplanes\n\n \n\nAD/TBM 700/8 Propeller Control 13/94\n\nApplicability: All TBM 700 series aircraft within the S/N 1 to 22, 24 to 92 inclusive. Requirement:  Action in accordance with Socata TBM 700 Service Bulletin 70-042-76.\n\nNote: DGAC AD 94-109-(B) refers.\n\n \n\nCompliance: Within 100 hours time in service from 8 December 1994.\n\n \n\nBackground:  To improve the governor control the manufacturer requires the propeller governor screws to be lockwired.\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\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive applies to the specified TBM 700 serial-number range and mandates the technical action described in the manufacturer's service bulletin, to be completed within the stated 100-hour window. Nothing in the text indicates a change from that stated scope or a broadened application; the document sets a narrow, specific requirement and compliance timeframe. (Applicability, Requirement, Compliance)"},"complexity_factors":["Narrow applicability: applies only to TBM 700 aircraft with specific serial numbers (S/N 1–22, 24–92). (Applicability)","Single, well-defined technical action: lockwiring propeller governor screws as specified. (Requirement, Background)","External technical reference: compliance is tied to a manufacturer service bulletin (Socata TBM 700 Service Bulletin 70-042-76), which must be consulted for procedural detail. (Requirement)","Fixed compliance window: must be done within 100 hours time in service from a specified date, creating a scheduling constraint. (Compliance)","Cross-reference to another authority's AD (DGAC AD 94-109-(B)), which may require checking that document for related technical or administrative details. (Note)"],"plain_english_summary":"The directive requires owners/operators of specified Socata TBM 700 aircraft (certain serial numbers) to have the propeller governor screws lockwired, performed by following Socata Service Bulletin 70‑042‑76. Work must be completed within 100 flight hours from 8 December 1994. The measure, prompted by the manufacturer, is intended to improve governor control."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in a limited fleet of aircraft. It has not expanded beyond its original purpose of mandating a specific propeller governor modification."},"complexity_factors":["Very short document (approximately 150 words of substantive content)","Only 1 defined applicability criterion (specific serial number ranges)","Single, unambiguous compliance requirement (follow the Service Bulletin)","No nested exceptions or conditional logic","No cross-references to other legislation or complex regulatory frameworks beyond the referenced Service Bulletin and French AD","Clear, fixed compliance deadline (100 hours time in service from specified date)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for specific aircraft.\n\n**What it does:**\nIt requires owners or operators of certain Socata TBM 700 aeroplanes to perform a specific safety fix on the propeller control system. The manufacturer (Socata) has determined that the propeller governor screws need to be secured with lockwire (a type of safety wire that prevents screws from loosening due to vibration) to improve control of the propeller governor.\n\n**Who it affects:**\n- Owners and operators of TBM 700 series aircraft with serial numbers 1 through 22, and 24 through 92\n- Maintenance organisations servicing these specific aircraft\n\n**What must be done:**\n- Follow the instructions in **Socata Service Bulletin 70-042-76** (a technical document from the manufacturer detailing exactly how to perform the fix)\n- Complete the work within **100 hours of flight time** after 8 December 1994\n\n**Why it matters:**\nPropeller governors control the pitch of the propeller blades, which affects engine speed and aircraft performance. If the governor screws loosen, the pilot could lose proper control of the propeller — potentially leading to engine overspeed, underspeed, or loss of power. This is a straightforward mechanical safety fix to prevent in-flight failures.\n\n**Note:** This references a French aviation authority directive (DGAC AD 94-109-(B)), indicating this safety issue was also recognised internationally."}},"importantCases":[],"_links":{"self":"/api/acts/ad-tbm-700-8-propeller-control","history":"/api/acts/ad-tbm-700-8-propeller-control/history","analysis":"/api/acts/ad-tbm-700-8-propeller-control/analysis","conflicts":"/api/acts/ad-tbm-700-8-propeller-control/conflicts","importantCases":"/api/acts/ad-tbm-700-8-propeller-control/important-cases","documents":"/api/acts/ad-tbm-700-8-propeller-control/documents"}}