065-0086-08

BendixKing KMC 321 controller 065-0086-08

065-0086-08 is the exact BendixKing Part Number for this KMC 321 flight control mode controller. The panel is the crew interface used to select and manage supported flight-director, autopilot and yaw-damper functions in a compatible BendixKing installation. It does not calculate aircraft guidance by itself; it sends the selected command to the associated flight-control equipment.

The complete -08 suffix matters when checking an aircraft equipment list, wiring drawing or replacement quotation. A unit that looks like another KMC 321 from the front may have a different configuration or modification status. Replacement should therefore be based on Part Number 065-0086-08, not on the model legend or button layout alone.

Mode selection and cockpit functions

The photographed panel provides clearly marked HDG, NAV, APR and BC selections for lateral guidance, plus ALT and IAS selections for supported vertical modes. FD, AP and YD controls address flight-director, autopilot and yaw-damper engagement where those functions are installed. The DN and UP control provides the crew interface for compatible vertical-command adjustment.

SOFT RIDE, HALF BANK and TEST controls are also visible on the exact unit. Their availability and operational effect depend on the approved KFC configuration and aircraft flight-manual supplement. The presence of a labeled button does not prove that every mode is enabled in every aircraft, so maintenance personnel should verify the installation rather than assume a universal feature set.

KMC 321 in the KFC control chain

Official BendixKing KFC 275/325 pilot documentation identifies the KMC 321 as the system mode controller. The same documented equipment family includes the KAS 297C altitude and vertical-speed preselector, KCP 220 flight computer, KDC 222 air-data computer, KRG 331 yaw-rate sensor, annunciation equipment and servo actuators. The installed combination varies with the approved aircraft configuration.

A simplified command chain is pilot mode selection at the KMC 321 → processing by the compatible flight computer → commands to the appropriate roll, pitch or yaw actuator → movement through the approved mount and aircraft linkage. Navigation, attitude, air-data and yaw inputs may also feed the flight-control computer. The KMC 321 is therefore a command and status interface, not a stand-alone autopilot.

Installation and configuration verification

The product photographs show the original black panel, mounting screws, control legends and housing form. The main image retains the exact geometry and authentic labeling, while the gallery image gives a closer view of the control layout. No controls from a different KMC 321 suffix have been substituted, and no unconfirmed electrical rating has been copied from another mode controller.

Before installation, confirm the complete Part Number, connector keying, panel cutout, mounting arrangement, aircraft wiring, circuit protection, software or modification status and approved system components. Exact dimensions, pin assignments, power requirements and environmental limits should be taken from the maintenance or installation data applicable to 065-0086-08. These values were not independently confirmed in the open material used for this card.

Mode-selection faults can also result from the flight computer, sensors, annunciation circuits, aircraft wiring or power distribution. The controller should therefore be evaluated within the complete system, using the approved preflight and maintenance tests, before a removal is attributed solely to the KMC 321.

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Overhauled supply and ordering information

This 065-0086-08 KMC 321 is offered in Overhauled condition from partner stock with a six-month warranty. The listed price follows the agreed rule and is set above the same-condition public reference where required. The serial number, release certificate, overhaul details and current test status for the unit allocated to an order are confirmed in the commercial quotation and dispatch documents.

For an inquiry, specify Part Number 065-0086-08, model KMC 321, aircraft type, installed KFC configuration, quantity and required certification. The flight computer, sensors, preselector, annunciator, servos, connectors and mounting hardware are supplied only when expressly included. Related flight-control units can be reviewed in the Garmin / BendixKing / Honeywell / Collins category; related equipment is not automatically interchangeable.

Product Type: Flight control mode controller / autopilot control panel

Manufacturer: BendixKing / Honeywell

Model: KMC 321

Designation: 065-0086-08

Alternative Designations: KMC321; KMC-321; 065008608; Bendix/King KMC 321 -08

Main Function: Crew selection and management of supported flight-director, autopilot and yaw-damper modes

Visible Lateral Modes: HDG, NAV, APR and BC

Visible Vertical Modes: ALT, IAS and DN / UP command adjustment

Additional Visible Controls: FD, YD, AP, SOFT RIDE, HALF BANK and TEST

Associated System Family: Compatible BendixKing KFC 275 / KFC 325 flight control installations

Typical Signal Chain: Pilot selection at KMC 321 → compatible flight computer → approved servo actuator and aircraft linkage

Associated Equipment: KCP 220 flight computer, KAS 297C preselector, KDC 222 air-data computer, KRG 331 yaw-rate sensor, approved annunciation and servo equipment where installed

Electrical Supply: Verify from the installation data applicable to 065-0086-08

Exact Dimensions and Weight: Refer to the approved KMC 321 installation drawing

Connector and Pin Assignment: Verify through the applicable KMC 321 system installation data

Interchangeability: Complete suffix, wiring, modification status, mounting and aircraft approval must be verified

Condition: Overhauled

Warranty: 6 Months

Delivery Set: Flight computer, sensors, preselector, annunciator, servos, connectors and mounting hardware only when expressly included

Technical Documentation: Applicable BendixKing KFC 275 / KFC 325 pilot, installation and maintenance data

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.