8A-5101-110-5 (8A.5101.00.5)

8A-5101-110-5 right-hand control column in the cockpit

The 8A-5101-110-5 is a right-hand manual control column used in the helicopter cockpit as part of the pilot’s flight control station. The assembly includes the RU-2 control handle with built-in push-button controls and wiring. It is not only a mechanical lever. The column gives the pilot physical control input through the manual flight control system and also provides electrical command input through the handle buttons. In Mi-8 and Mi-17 helicopters, this type of control column belongs to the primary cockpit control architecture and is installed at the right-hand pilot position.

8A-5101-110-5 function in manual flight control

In operation, the control column transfers the pilot’s hand movement into the helicopter manual control system. The mechanical part of the assembly is linked with the flight control chain, while the RU-2 handle adds electrical control functions through its integrated buttons. These buttons can send commands to connected onboard circuits without the pilot removing a hand from the control. This is why the handle, wiring harness, and switching contacts are part of the same functional assembly. The unit must be checked not only as a cockpit control part, but also as an electrical switching device.

Pilot commands through the RU-2 handle on 8A-5101-110-5

The RU-2 handle fitted to the 8A-5101-110-5 column contains push-button controls used for remote electrical command transmission. The exact connected functions depend on the helicopter configuration and wiring. In maintenance work, the handle is usually checked together with its harness, contact resistance, switching operation, and the condition of the buttons. A problem in the handle may appear as a failed command, unstable contact, or incorrect signal transmission to the aircraft system. For this reason, replacement or inspection should include both the mechanical column and the electrical part of the RU-2 handle.

Mi-8 and Mi-17 cockpit use of 8A-5101-110-5

The 8A-5101-110-5 is used on Mi-8 and Mi-17 family helicopters as a cockpit control assembly. It is installed at the right-hand control station and forms part of the manual flight control layout used by the pilot. The same helicopter family may include different cockpit configurations depending on production series, overhaul status, and installed avionics or mission equipment. Because of this, the part should be matched against the helicopter parts catalog, repair documentation, or actual installed assembly. A visually similar control column may not always match the required wiring or handle configuration.

Ordering and identification of control column 8A-5101-110-5

Before ordering, the marking of the installed control column and the RU-2 handle should be checked against the helicopter documentation. The assembly may appear in catalogs as part of the right control column set 8A-5101-00-5, while the product itself may also be referenced under the alternative designation 8A.5101.00.5. For accurate supply, it is useful to provide the part number from the aircraft logbook, photos of the handle and connector area, and information on whether the request concerns the full column, the RU-2 handle, the wiring harness, or the included adjustment tool.

Product Type: Right-hand manual control column with electrical control handle
Function: Manual flight control and remote electrical command input
Application / Where Used: Helicopter manual flight control system
System / Installation Area: Cockpit, right-hand pilot control station
Part of System / Included in Set: Assembly of right control column 8A-5101-00-5
Compatible Aircraft / Equipment: Mi-8, Mi-17 helicopters
Operating Voltage: 27 V DC
Switching Current (KR, KZ Buttons, Resistive Load): 0.1–5 A
Switching Current (KR, KZ Buttons, Inductive Load): 0.1–3 A
Switching Current (2KPP Button, Resistive Load): 0.1–1 A
Switching Current (2KPP Button, Inductive Load): 0.1–0.5 A
Voltage Drop at Contacts: Not more than 180 mV
Operating Temperature Range: −60 to +80 °C
Weight (RU-2 Handle with Wiring Harness): Not more than 0.65 kg
Net Weight (RU-2 Handle): 0.567 kg
Dimensions (RU-2 Handle): 0.17 × 0.065 m
Assigned Resource: 3000 flight hours
Assigned Service Life: 6 years
Storage Life: 2 years
Scope of Supply: Right manual control column with RU-2 handle, wiring harness, adjustment tool 70PS-735
Technical Documentation: Passport and operating documentation for 8A-5101-110-5 / RU-2

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