5395VT

5395VT actuator unit in aircraft control systems

The 5395VT is an aircraft actuator unit used to move and hold control elements in onboard air-management systems. In aircraft equipment lists it appears as an executive device rather than a measuring unit: it receives an electrical command and converts it into mechanical movement. Such actuators are installed where a flap, valve, or regulating element has to be opened, closed, or positioned automatically. The unit is associated with aircraft air-conditioning, ventilation, pressure-regulation and hot-air distribution circuits, where manual control from the cockpit would not be practical for normal system operation.

Aircraft air control work of the 5395VT

In service, the 5395VT is normally connected to a controlled flap or valve by a mechanical linkage, shaft, or drive interface. When the aircraft control system sends a command, the actuator moves the connected element to the required position. This changes air flow through the duct, regulates pressure in the line, or closes a section of the system when required. The unit is useful in systems that work with engine bleed air, APU air supply, air-conditioning lines, ventilation channels, and other circuits where the position of the flap directly affects system performance.

5395VT with air-conditioning and pressure-regulation equipment

The 5395VT is commonly associated with heavy transport and passenger aircraft systems, including Il-76, Il-78 and Il-86 applications depending on configuration. In these aircraft, air-conditioning and pressure-regulation systems include many valves and flaps that must work in a coordinated sequence. The actuator does not decide the system mode by itself. It follows commands from control units, sensors, switches, and automatic regulation equipment. For this reason, the same actuator may be checked as part of a larger circuit rather than as a separate electrical motor only.

5395VT mechanical movement and feedback

The 5395VT is described as an electromechanical actuator. This means that electrical power is used to drive an internal mechanism, and the output movement is transmitted mechanically to the controlled flap or valve. In similar aircraft actuator systems, end-position switches and feedback elements are used to stop the drive at the required positions and report the actual position to the control circuit. For the 5395VT, exact feedback configuration and adjustment data should be taken from the passport, wiring diagram and maintenance documentation for the specific aircraft installation.

Electromechanism in the 5395VT assembly

The passport page for the 5395VT shows the actuator unit as a complete item and lists an associated electromechanism MPK-13A-5, Series 2 in the completeness section. This is important for procurement, because the buyer may need the complete actuator unit, the electromechanism only, or a unit with a specific completeness status. In aircraft supply, the difference matters. A bare drive, a complete actuator, and an actuator with passport documentation are not the same position for installation, repair, or stock accounting.

Maintenance and inspection of 5395VT

During maintenance, the 5395VT should be checked for secure mounting, connector condition, smooth mechanical travel, end-position operation, linkage condition, and any signs of overheating or moisture damage. Since the unit works in aircraft technical compartments and can be connected to hot-air control equipment, storage and previous service condition are important. A unit that looks clean externally may still require electrical testing and travel verification before installation. If it is supplied from storage, passport records and movement history should be reviewed together with the physical condition of the item.

Identification and supply of 5395VT

For ordering or repair, the full designation 5395VT should be used, and the required condition should be stated clearly: new, from storage, repaired, overhauled, serviceable with documents, or for repair. The passport designation 5395VT PS should be requested when documentation is needed. It is also worth clarifying whether the unit is supplied with the MPK-13A-5 Series 2 electromechanism and whether any additional installation hardware, linkage parts, or aircraft-specific accessories are included. Final applicability must be checked against the aircraft parts catalog and system documentation.

Product Type: Aircraft actuator unit / electromechanical actuator
Designation: 5395VT
Passport Designation: 5395VT PS
Manufacturer: LEPSE Electromechanical Plant, Kirov, according to product background data
Function: Electrical command conversion into mechanical movement of aircraft flaps, valves, or regulating elements
Application / Where Used: Aircraft air-conditioning, ventilation, pressure-regulation, hot-air distribution and related automatic control systems
System / Installation Area: Aircraft technical compartments; air ducts; bleed-air and air-management circuits depending on aircraft configuration
Typical Controlled Elements: Air flaps, regulating valves, shut-off valves, or similar air-control devices
Associated Electromechanism: MPK-13A-5, Series 2, listed in the passport completeness section
Compatible Aircraft / Equipment: Il-76, Il-78, Il-86 and related aircraft systems depending on configuration
Related Equipment: Command units, air temperature / flow sensors, regulating flaps, control blocks and aircraft wiring depending on system layout
Operating Principle: Electromechanical reversible drive
Control Type: Remote or automatic electrical control from onboard systems
Position Control: End-position / feedback elements depending on installation and documentation
Power Supply: 27 V DC aircraft electrical system according to provided system description
Supply Category: Aircraft technical equipment
Completeness: According to passport; actuator unit 5395VT and associated MPK-13A-5 Series 2 electromechanism noted in the uploaded passport
Condition: As applicable
Technical Documentation: Product passport 5395VT PS, movement / storage records and aircraft maintenance documentation as applicable

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