APD-58A
Start Control Unit
Description
APD-58A System Overview
The APD-58A is an aircraft engine start automatic control unit designed for automated control of gas turbine engine start processes within onboard systems of helicopters and aircraft. The unit functions as a programmed control device integrated into the engine starting system architecture.
Full descriptionCollapse description
APD-58A Control Function
The device manages the sequence of activation of engine start system components, including starter operation, ignition systems, and fuel supply, ensuring execution of the start cycle according to a predefined timing program and automatic shutdown upon reaching required parameters or timeout conditions.
APD-58A Aircraft Application
The unit is commonly used on helicopters of the Mi-8 family and on certain aircraft types, where it supports automated start of main engines or auxiliary power units within onboard systems.
APD-58A System Integration
The control unit operates in conjunction with onboard engine and electrical systems, controlling external contactors, ignition units, and fuel valves through programmed time sequences corresponding to start, cold rotation, and false start modes. The product is also known under alternative designations APD-58A and АПД-58А.
Technical details
- Product Type
- Engine start automatic control unit
- Function
- Automatic control of gas turbine engine start sequence
- Application / Where Used
- Aircraft engine and APU start systems
- System / Installation Area
- Engine start control system
- Compatible Aircraft / Equipment
- Mi-8 (Mi-8T, Mi-8MT) and similar aircraft
All specificationsCollapse specifications
- Compatible Engines
- TV2-117; TV3-117
- Operating Voltage
- 27 V DC
- Current Consumption
- Variable depending on load (up to several amperes during operation)
- Controlled Circuits
- Starter contactors; ignition coils; fuel solenoid valves; signaling circuits
- Operating Modes
- Start; Cold Rotation; False Start
- Cycle Duration
- Approximately 50–60 s
- Control Sequence
- Starter activation; ignition activation; fuel supply; acceleration; automatic shutdown
- Start Termination
- Automatic shutdown if required engine speed not reached within defined time
- Cold Rotation Mode
- Starter operation without fuel and ignition
- False Start Mode
- System check without full engine start (depending on configuration)
- Operating Temperature Range
- −60 to +60 °C
- Mounting Type
- Panel or block installation
- Weight
- Approximately 2.5–3 kg
- Construction Type
- Electromechanical or relay-based programmed unit
- Technical Documentation
- Product passport and operational documentation
Payment & delivery
Orders ship from our hub in Dubai. Partner stock is first transferred to Dubai, then shipped to you.
Dubai stock: 100% before dispatch. Partner stock (Remote stock) and Pre-order: 50% advance payment to start the order and 50% before shipment from Dubai to you.
Availability, lead time, delivery cost and payment terms are confirmed for your order before payment.
Payment & delivery terms