{"id":"F2006B10321","name":"AD/GROB 115/2 - Engine Control Cables and Fuel Shut-Off Valve","slug":"ad-grob-115-2-engine-control-cables-and-fuel-shut-off-valve","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56075,"registerId":"commonwealth-F2006B10321-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/GROB 115/2 - Engine Control Cables and Fuel Shut-Off Valve","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)  Grob G115 Series Aeroplanes\n\n \n\nAD/GROB 115/2 Engine Control Cables and Fuel Shut-Off Valve 12/89\n\nApplicability: All Grob G115 series aircraft, except those already modified as listed in Grob SB TM1078-8.\n\n \n\nRequirement: Action in accordance with Grob Service Bulletin TM1078-8.\n\n \n\nNote: LBA AD 89-141 Grob refers.\n\n \n\nCompliance: Prior to 31 January 1990.\n\n \n\nBackground:  To maintain aircraft airworthiness, replacement of the engine control cables and fuel shut-off valve insert is required.\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":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive for a specific aircraft type. It has not expanded beyond its original purpose of mandating a particular mechanical modification."},"complexity_factors":["Single, specific mechanical requirement with no conditional logic","Only one defined term of note ('Applicability' limited to specific aircraft series)","No cross-references to other legislation or complex regulatory provisions","Straightforward compliance deadline with no exceptions or extensions mentioned","Refers to external technical document (service bulletin) but does not reproduce its contents","Total length: approximately 150 words of substantive content"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety notice issued by Australia's Civil Aviation Safety Authority (CASA) for a specific type of aircraft.\n\n**What it does:**\nOrders owners and operators of **Grob G115 series aeroplanes** to replace certain engine control cables and a fuel shut-off valve insert. These parts must be swapped out according to instructions in a manufacturer service bulletin (Grob SB TM1078-8).\n\n**Who it affects:**\nAnyone who owns, operates, or maintains a Grob G115 aircraft — unless their plane has already been modified as described in the service bulletin.\n\n**Why it matters:**\nThese components are critical for controlling the engine and shutting off fuel flow. If they fail, the pilot could lose throttle control or be unable to cut fuel in an emergency. The directive was issued to prevent accidents caused by these specific mechanical failures.\n\n**Key deadline:**\nThe work had to be completed before **31 January 1990**.\n\n**Note:** This references a German aviation authority directive (LBA AD 89-141), showing international coordination on this safety issue."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The document itself contains no wording that modifies or narrows the stated corrective action. It directs replacement of specified components for all Grob G115 series aircraft except those already modified per the referenced service bulletin, and sets a single compliance date. There is no indication within this text that the scope of affected aircraft or the nature of the required work has been changed from the instrument’s expressed terms (Applicability; Requirement; Compliance; Background)."},"complexity_factors":["Mandatory requirement but minimal procedural detail inside the AD — compliance depends on an external manufacturer service bulletin (dependency on external document). (Requirement)","Fixed compliance deadline creates scheduling and supply-chain pressure. (Compliance)","Applicability is broadly stated (all G115 series) with exceptions defined only by cross-reference to the service bulletin. (Applicability)","Technical work requires qualified maintenance and part availability (technical complexity not described in the AD). (Requirement)","Regulatory enforcement falls to civil aviation authority under Part 39, but the AD does not set out enforcement steps or alternative compliance routes within its text. (Header; Requirement)"],"plain_english_summary":"This AD requires owners/operators of Grob G115 aircraft (except those already modified per Grob SB TM1078-8) to replace specified engine control cables and the fuel shut-off valve insert, following Grob Service Bulletin TM1078-8, by 31 January 1990. Compliance preserves airworthiness, is enforced by the regulator, and the parts, labour and downtime costs fall to the operators."}},"importantCases":[],"_links":{"self":"/api/acts/ad-grob-115-2-engine-control-cables-and-fuel-shut-off-valve","history":"/api/acts/ad-grob-115-2-engine-control-cables-and-fuel-shut-off-valve/history","analysis":"/api/acts/ad-grob-115-2-engine-control-cables-and-fuel-shut-off-valve/analysis","conflicts":"/api/acts/ad-grob-115-2-engine-control-cables-and-fuel-shut-off-valve/conflicts","importantCases":"/api/acts/ad-grob-115-2-engine-control-cables-and-fuel-shut-off-valve/important-cases","documents":"/api/acts/ad-grob-115-2-engine-control-cables-and-fuel-shut-off-valve/documents"}}