{"id":"F2006B04939","name":"AD/CESSNA 150/41 - Elevator Torque Tube","slug":"ad-cessna-150-41-elevator-torque-tube","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44786,"registerId":"commonwealth-F2006B04939-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 150/41 - Elevator Torque Tube","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)  Cessna 150, F150, 152 & F152 Series Aeroplanes\n\n \n\nAD/CESSNA 150/41 Elevator Torque Tube 3/88\n\nApplicability: Reims models FA152 S/Nos FA1520390 to FA1520425 and F152 S/Nos F15201966 to F15201980.\n\n \n\nRequirement: Action in accordance with Cessna SEB 87-9.\n\n \n\nCompliance: At the next inspection for Maintenance Release issue after 24 March 1988.\n\n \n\nBackground:  The manufacturer indicates that there are torque tubes in use in the specified aircraft that may have cracked or incomplete welds.\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":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1830},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original targeted scope addressing a specific manufacturing defect in defined serial numbers of Reims-built aircraft. No expansion beyond the original structural safety intent is evident."},"complexity_factors":["References external technical document (Cessna SEB 87-9) without reproducing its procedural contents","Narrow applicability requires cross-checking aircraft logbooks against specific Reims serial numbers","Technical aviation terminology (torque tube, Maintenance Release) assumes maintenance engineering knowledge","Single-condition compliance trigger tied to regulatory maintenance schedule"],"plain_english_summary":"**What this is:** A mandatory safety order (Airworthiness Directive) requiring immediate action on specific Cessna aeroplanes to prevent loss of control.\n\n**Who it affects:** Owners and operators of Reims-built (French-manufactured) Cessna 150 and 152 aircraft with serial numbers **FA1520390 to FA1520425** and **F15201966 to F15201980**.\n\n**What you must do:** Inspect and repair the **elevator torque tube** (the metal shaft connecting the pilot's control yoke to the elevator, which controls the aircraft's up-and-down movement) following the manufacturer's **Service Bulletin SEB 87-9**.\n\n**Why it matters:** Some torque tubes were manufactured with **cracked or incomplete welds**. If this component fails in flight, the pilot could lose control of the aircraft's pitch, potentially causing a crash.\n\n**When you must comply:** Before the aircraft can be flown again after its next scheduled inspection for **Maintenance Release** (the safety certificate required to legally fly) occurring after 24 March 1988."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-150-41-elevator-torque-tube","history":"/api/acts/ad-cessna-150-41-elevator-torque-tube/history","analysis":"/api/acts/ad-cessna-150-41-elevator-torque-tube/analysis","conflicts":"/api/acts/ad-cessna-150-41-elevator-torque-tube/conflicts","importantCases":"/api/acts/ad-cessna-150-41-elevator-torque-tube/important-cases","documents":"/api/acts/ad-cessna-150-41-elevator-torque-tube/documents"}}