BU-2A Series 3

BU-2A series 3 — verified identity and purpose

BU-2A series 3 is a Series 3 flap-control unit for the SEUZ-1 Series 2 system. The block compares command and feedback potentiometer signals and switches control, indication and synchronization circuits for the aircraft flap-control system. The documented associated mechanisms are MKV-43A Series 2, MKV-42A Series 2 and MKV-41 Series 2.

Function in the installed system

The block must be treated as one element of an installed aircraft system, working with the sensors, command circuits, indicators, actuators or power sources stated in that system documentation. A category label alone does not define pinout or interchangeability. General context is available under aircraft and avionics equipment.

Technical data and system interfaces

The Technical Details below separate confirmed values from points that still require the exact passport. Existing technical values were retained where they were specific to this designation. No voltage, aircraft type, mass or compatibility was copied from a similarly named product.

Identification and compatibility

Confirm the complete designation, suffix, series, drawing number, connector keying and aircraft or system effectivity. Related variants are not automatic substitutes. Photographs of the data plate and connectors are required when the execution cannot be established from the order line alone.

Inspection and ordering

Inspect the housing, mounting points, connectors, seals and markings before testing. Use only the approved procedure for the exact execution. State the full designation, aircraft or system, quantity, condition, delivery set and document requirements in the enquiry. Related items are listed under Electronic Control Units.

Product Type: Series 3 flap-control unit for the SEUZ-1 Series 2 system
Primary Designation: BU-2A series 3
Original Cyrillic Designation: БУ-2А серии 3
Verified Purpose: The block compares command and feedback potentiometer signals and switches control, indication and synchronization circuits for the aircraft flap-control system. The documented associated mechanisms are MKV-43A Series 2, MKV-42A Series 2 and MKV-41 Series 2.
Documented System: SEUZ-1 Series 2
Associated Mechanisms: MKV-43A Series 2, MKV-42A Series 2 and MKV-41 Series 2
DC Supply: 27 V
AC Supply: 36 V, 400 Hz
Recorded Current at 36 V / 400 Hz: Not more than 320 mA
Duty: Continuous
Operating Temperature: −60 to +60 °C
Mass: Not more than 4.3 kg
Alternative Designations: BU-2A series 3; BU2A series 3; БУ-2А серии 3
Interchangeability: Only after matching the complete nameplate, execution, connectors and system documentation
Documentation: Product passport and applicable aircraft/system maintenance 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.