APD-55

APD-55 System Overview

The APD-55 is an aircraft engine start automatic control unit designed for automated control of engine start processes within onboard systems of helicopters and other aircraft. The unit functions as an electronic control device integrated into the engine starting system architecture.

APD-55 Control Function

The device manages the sequence of engine start operations, including activation of the starter, ignition system, and fuel supply, as well as automatic shutdown of systems upon reaching required engine parameters or expiration of the programmed cycle.

APD-55 Aircraft Application

The unit is applied on various aircraft types, including helicopters of the Mi-8 family, where it is used as a standard control component for engine start systems during ground and operational procedures.

APD-55 System Integration

The control unit operates in conjunction with onboard engine systems and cockpit controls, ensuring coordinated activation of start system components and transition of the engine to idle режим. The product is also known under alternative designations APD-55 and АПД-55.

Product Type: Engine start automatic control unit
Function: Automatic control of engine start sequence
Application / Where Used: Aircraft engine start systems
System / Installation Area: Engine start control system
Compatible Aircraft / Equipment: Mi-8 family helicopters and other aircraft
Control Functions: Starter activation; ignition control; fuel supply control; automatic shutdown
Start Termination Criteria: Engine speed reaching approximately 55% or completion of programmed time cycle
Ignition Control Timing: Automatic shutdown after defined start interval
Control Sequence: Starter engagement; ignition activation; fuel supply introduction; acceleration to idle; automatic disconnection of systems
Construction Type: Electronic control unit
Indication: System operation indication via onboard panel
Technical Documentation: Product passport and operational documentation

All shipments are carried out from our international warehouse in Dubai (UAE), as well as from our partners’ remote warehouses.

In Stock — items available in stock at the Dubai warehouse are dispatched within 5–10 business days after receiving 100% prepayment.

Remote Stock — items available at our partners’ remote warehouses are supplied within an average of 30–45 business days after receiving 100% prepayment.

Pre-Order — made-to-order products are manufactured and delivered within an average of 45–60 business days. Payment terms: 50% advance payment to start production, with the remaining 50% paid before dispatch from the Dubai warehouse after full readiness for shipment.

Returns & Changes (Restocking Fee)
For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.

Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.