6S2.390.007-3 Series 1

6S2.390.007-3 Series 1 Control Panel is an aircraft autopilot control device installed as part of the AP-34B Series 2 automatic flight control system on Mi-8/Mi-17 helicopter platforms. The unit provides pilot command input, mode selection and signal routing into the autopilot logic channel, ensuring controlled engagement, disengagement and transition between stabilized flight modes.

The device interfaces with autopilot logic units, amplifiers and actuators to support attitude stabilization, heading control and engine/governor signal interaction depending on aircraft configuration. The panel is mounted in the helicopter cockpit and allows the crew to manually select AP-34B operating modes while the system executes automatic corrections.

The control panel is powered by both DC and AC aircraft electrical buses. Signal functions include command switching, mode activation, feedback control and output communication to downstream autopilot electronics. The unit is classified as aviation technical equipment and installed on standard mounting brackets in the cockpit.

Alternate Designations:
The 6S2.390.007-3 control panel may appear in parts lists or maintenance documents under slight numeric and decimal variations including 6С2.390.007-3, 6S2-390-007-3, 6S2390007-3, 6S2 390 007-3.
All designations refer to the same device.

Purpose: Manual control and command input for AP-34B autopilot system
Systems: AP-34B automated flight control, cockpit control interface, avionics
Application: Mi-8, Mi-17, Mi-8AMT, Mi-8MTV-1 and related variants equipped with AP-34B Series 2
Product Type: Aircraft autopilot control panel
DC Power Supply: 27 ±2 V
AC Power Supply: 36 ±2 V, 400 Hz, three-phase
Control Circuit Current Consumption: Not more than 1.5 A
AC Phase Current Consumption:
— Phase I: not more than 0.7 A
— Phase II: not more than 0.7 A
— Phase III: not more than 0.7 A
Residual Output Voltage from Power-Off SPD channel: Not more than 5 V
Weight: Not more than 2.9 kg
Precious Metals Content (summary): Silver, palladium, platinum (per manufacturer passport)
Category: Aviation technical equipment (ATE)
Mounting: Cockpit installation on standard brackets
Condition: As applicable
Documentation: Manufacturer passport and AP-34B system manual available upon request

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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.