{"id":"F2006B04871","name":"AD/CASA/15 - Flight Idle Stops","slug":"ad-casa-15-flight-idle-stops","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44678,"registerId":"commonwealth-F2006B04871-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CASA/15 - Flight Idle Stops","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)  Casa 212 Series Aeroplanes\n\n \n\nAD/CASA/15 Flight Idle Stops  9/92 TX\n\n \n\nApplicability: All model C-212- series aircraft.\n\n \n\nRequirement: Action in accordance with the technical requirements of FAA Telegraphic AD T92-13-51.\n\nNote: CASA SB 212-76-07 provides service data on the backup blocking system.\n\nCompliance: Within 48 hours from 24 June 1992. Thereafter reinspect at intervals not exceeding 300 hours time in service.\n\n \n\nBackground: During investigation of a fatal accident a backup power lever flight idle stop was found to be inoperative. This directive introduces a functional test of the system.\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":3,"scope_assessment":{"changed":false,"description":"The directive keeps scope focused on the originally identified system and aircraft group: it requires a functional test of the backup power lever flight idle stop on all C-212-series aircraft and sets inspection timing (Applicability, Requirement, Compliance, Background). It does not expand applicability beyond that aircraft family or broaden the set of systems regulated; it introduces a specified mandatory test and a recurring inspection interval consistent with the stated purpose."},"complexity_factors":["Applicability limited to a single aircraft family (all C-212-series) — narrows scope","Mandates following an external technical document (FAA Telegraphic AD T92-13-51), requiring access to and interpretation of that document","Immediate short compliance window (48 hours from 24 June 1992) plus an ongoing reinspection interval (every 300 hours time in service)","Requires technical functional test of a specific mechanical system (backup power lever flight idle stop), necessitating qualified maintenance personnel","Cross-reference to CASA Service Bulletin for service data (procedural dependency)","Potential need for further corrective work if the test fails (imposes variable repair complexity and parts requirements)"],"plain_english_summary":"This AD requires all CASA C‑212 aircraft to perform an immediate functional test of the backup flight idle‑stop (initially within 48 hours of 24 June 1992) and repeat inspections no later than every 300 flight hours, following FAA Telegraphic AD T92‑13‑51 and CASA Service Bulletin 212‑76‑07. Prompted by a fatal accident, it aims to detect and correct failures; operators bear the costs, downtime and any required repairs."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive issued in response to a specific accident. It has not expanded beyond its original purpose of mandating inspection of the flight idle stop system on C-212 aircraft."},"complexity_factors":["Very short document (approximately 200 words)","Only 1 defined term implicitly used ('time in service')","No cross-references to other legislation sections","Simple conditional structure: single applicability rule, single compliance deadline, single recurring interval","No nested exceptions or conditional logic","Relies on external technical document (FAA AD) for actual procedural details rather than embedding them"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA).\n\n**What it does:**\n- Requires owners and operators of **CASA 212 series aircraft** (a type of twin-turboprop aeroplane) to perform a specific safety check on the \"flight idle stop\" system.\n- A \"flight idle stop\" is a mechanical safety feature on the power/throttle lever that prevents the engine from accidentally being moved into a dangerous position (like feathered or shut down) during flight.\n\n**Why it matters:**\n- This directive was issued after a **fatal accident investigation** revealed that a backup safety mechanism on the power lever was not working.\n- The backup system is designed to prevent catastrophic engine failure if the primary stop fails.\n\n**Who must comply:**\n- Anyone operating **any model of C-212 series aircraft** in Australia.\n\n**What must be done:**\n- **Within 48 hours** of 24 June 1992: Perform a functional test of the backup power lever flight idle stop system.\n- **Ongoing:** Reinspect this system every **300 hours of flight time** (\"time in service\").\n\n**Key reference:**\n- Operators must follow the technical requirements set out in **FAA Telegraphic AD T92-13-51** (the US aviation safety regulator's equivalent order).\n- **CASA SB 212-76-07** provides additional technical guidance on the backup blocking system."}},"importantCases":[],"_links":{"self":"/api/acts/ad-casa-15-flight-idle-stops","history":"/api/acts/ad-casa-15-flight-idle-stops/history","analysis":"/api/acts/ad-casa-15-flight-idle-stops/analysis","conflicts":"/api/acts/ad-casa-15-flight-idle-stops/conflicts","importantCases":"/api/acts/ad-casa-15-flight-idle-stops/important-cases","documents":"/api/acts/ad-casa-15-flight-idle-stops/documents"}}