MKV-41 Series 2

MKV-41 Series 2 limit switch mechanism

MKV-41 Series 2 is an aircraft limit switch mechanism used in civil and military aircraft control and indication systems. The unit is applied as a position-sensing mechanism for wing high-lift devices and related transmission elements. It is installed in the mechanical drive path of flaps, slats or associated gearbox/transmission units, where it tracks selected end or intermediate positions. In aircraft operation, correct position feedback is required for synchronization, cockpit indication and safe control logic of the mechanization system.

Position control function of MKV-41 Series 2

The MKV-41 Series 2 mechanism monitors the angular or mechanical position of connected transmission elements. When the driven mechanism reaches a defined position, the internal switches open or close the corresponding electrical circuits. This allows the aircraft system to receive signals for end positions, intermediate positions or synchronization states. These signals may be used by control relays, cockpit annunciators and related automatic logic. The mechanism therefore works as an interface between mechanical movement in the wing mechanization system and electrical control or indication circuits.

MKV-41 Series 2 in wing mechanization systems

The MKV-41 Series 2 is used as a position sensor for aircraft wing mechanization, including flap and slat drive systems where applicable. The unit can be connected to transmission shafts, reducers or drive mechanisms that move the high-lift devices. Its signals support monitoring of movement, detection of selected positions and coordination between control channels. In aircraft such as the Tu-154 family, similar mechanisms are used in systems where accurate tracking of mechanization position is required for flight crew awareness and system protection.

Electrical switching role of the MKV-41 Series 2 mechanism

The MKV-41 Series 2 switches DC aircraft electrical circuits, typically in the 27 V onboard network. Its internal switching elements operate in signal and control circuits rather than high-power drive circuits. The mechanism may interact with synchronization channels, control relays and cockpit light indication. Depending on the aircraft system, it may also support logic related to rudder and elevator force-loading systems when those functions depend on wing mechanization position. For this reason, the exact wiring role must be checked by aircraft type and electrical diagram.

Construction of MKV-41 Series 2

The MKV-41 Series 2 is a compact onboard mechanism with a sealed metal housing designed for aircraft vibration, altitude and moisture conditions. Its internal equipment may include microswitches for end and intermediate positions and feedback elements such as selsyn-type sensors or potentiometric position elements, depending on configuration. Mechanical input is normally provided through a shaft or flange interface connected to the drive transmission. Electrical output is supplied through aviation plug connectors, commonly of the ShR type or similar connector families specified by aircraft documentation.

Identification and documentation for MKV-41 Series 2

Before ordering or installing MKV-41 Series 2, the aircraft type, installation location, connector configuration, switching circuit and documentation reference should be confirmed. The unit may be requested for replacement, repair stock or overhaul support. Exact mounting dimensions, shaft spline details, connector pinout and adjustment data should be taken from the original product passport or aircraft maintenance documentation. For procurement, it is useful to specify the full designation, series, required condition, passport availability and whether installation or electrical test documentation is required.

Product Type: Aircraft limit switch mechanism / position-sensing mechanism
Designation: MKV-41 Series 2
Alternative Designations: МКВ-41 серия 2, MKV-41 Ser. 2
Function: Position monitoring and electrical signaling of selected mechanism positions
Application / Where Used: Wing mechanization systems, flap and slat transmission control circuits
System / Installation Area: Aircraft wing mechanization transmission, reducer or drive mechanism area according to aircraft documentation
Compatible Aircraft / Equipment: Tu-154 family aircraft and other aircraft according to applicable documentation
Controlled Mechanisms: Flaps, slats and related wing mechanization transmission elements, depending on installation
Circuit Type: Aircraft DC signal and control circuits
Nominal Operating Voltage: 27 V DC
Control Principle: Mechanical drive from transmission shaft with electrical switching output
Internal Elements: Microswitches for end/intermediate positions; feedback sensors depending on configuration
Feedback Elements: Selsyn-type sensors such as DS-10 or potentiometric elements, depending on documentation
Electrical Connectors: Aviation plug connectors, including ShR-type connectors where applicable
Housing: Sealed metal housing for aircraft vibration, moisture and altitude conditions
Approximate Size Class: Compact onboard mechanism; length about 150–220 mm depending on shaft and connector configuration
Condition: As applicable
Technical Documentation: Product passport, aircraft maintenance documentation, electrical diagram and technical description such as 004.307 RE where applicable

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