Aeroforce 470948-9001 CONTROLLER, DUAL RATIO- REBUILT

The **Aeroforce 470948-9001 Dual Absolute Pressure Ratio Controller** (P/N **470948-9001**) is engineered to manage turbo boost pressure in aircraft powered by Lycoming TSIO-520E engines. It ensures precise and consistent turbocharger performance, optimising engine output across various altitudes. *Images are representative and may not show the exact product for sale.* --- ## Applications The **Aeroforce 470948-9001 Dual Absolute Pressure Ratio Controller** is suitable for the following aircraft and engine models: - **Cessna 401B / 402B** - TSIO-520E - Model years: 1970–1978 --- ## Why CJ Aerospace? CJ Aerospace delivers certified aviation engine controllers backed by technical expertise and fast delivery: - 🇦🇺 **Australian-owned & operated** - 📦 **Stocked locally in Australia for fast dispatch** - 🔧 **Expert guidance on turbo system integration and engine compatibility** - ✈️ **Trusted by MROs, operators, and avionics professionals** > ✉️ [Contact us: sales@cjaerospace.com.au](mailto:sales@cjaerospace.com.au) > Need help confirming if this controller suits your aircraft? Our team is ready to assist.

- **Boost Control:** Regulates turbo boost pressure for optimal performance - **Engine Performance Optimisation:** Maintains appropriate boost for varying engine demands at different altitudes - **Altitude Compensation:** Adjusts turbo operation to maintain consistent power output with changing air density - **Temperature Management:** Monitors and manages turbo and oil temperatures to prevent overheating - **System Integration:** Coordinates with engine management and other aircraft systems - **Safety Features:** Protects engine and turbocharger from overboost or unsafe conditions - **Operational Modes:** Supports normal, starting, and shutdown phases for smooth turbo operation - **Overhaul Compliance:** Compatible with turbo-system components overhauled per Hartzell Engine Technologies RSF requirements using original manufacturer parts