Part #:

Model: KC-192




Autopilot Computer

Part Number :

  • Mode Controller / Flight Computer / Annunciator
  • Flight Computer for the KFC-150 Autopilot System
  • Incorporates all computer functions, mode control buttons & annunciator lights in a single unit
  • Panel Mount
  • Annunciates all vertical & lateral flight director & autopilot system modes
  • Contains altitude sensor
  • Has 7 push buttons for engaging flight director and/or autopilot modes, a push button to initiate a system self-test, and a vertical trim rocker switch to allow for changing the aircraft's pitch up or down without disconnecting the autopilot
  • Certified in over 40 different aircraft types
  • Connector modules are used to adapt the computer software to preform satisfactory with each individual airframe - connector modules are sold & shipped separately
  • A self test is required before autopilot engagement is allowed
  • Interfaces with the KS-17X and KS-27X series of servo actuators



Size: 6.312" w x 1.55" h x 11.62" L Weight: 2.6 lbs max (unit only)
Temperature: -20°C to +55°C Altitude Range:  Up to 35,000 ft
Power Input: +28VDC @ 1.2A, 14VDC @ 2.4A Power Output: +15VDC @ .2A -15VDC @ .2A +5VDC @ .2A 10VAC 506 Hz @ 2.5 VA 
Vertical Reference: 2 Wire, Pitch & Roll, 206mVAC per degree; 2 Wire, Pitch & Roll, 206mVAC per degree (EFIS) Directional Reference: 2 Wire Heading Datum, 550mVDC/Degree; 2 Wire Heading Datum, 393mVAC/Degree (EFIS)
Course Datum: 2 Wire Course Datum, 210mVDC/Degree; 2 Wire Heading Datum, 393mVAC/Degree (EFIS) VOR/RNAV Receiver: 60mV/Deg/Localizer, 15mV per Deg/VOR, 30mV/NM RNAV Enroute, 120mV/NM RNAV APPR
LOC Energize Sense: Ground for LOC Enable Glideslope Receiver: 214mV/Deg
Symbol Generator (EFIS) Valid: 0/28V, 1 Wire Glideslope Valid: 180mV for Valid
Middle Maker Sense: 1 Wire, 2VDC Min for MKR on Outer Marker Sense: 1 Wire, 2VDC Min for MKR on
Pitch Servo Tach Feedback: 2 Wire, DC Differential voltage Roll Servo Tach Feedback: 2 Wire, DC Differential voltage
Switched 28VDC: 1 Wire Yaw Damp Engage: 1 Wire
Compass Valid: Hi = Invalid, Ground = Valid; 28V = Valid, Ground = Invalid (EFIS) Back Lighting: 3 wires (14 or 28V inputs)
Pitch Servo Drive: 2 Wire DC Differential, 0 to 28V max Roll Servo Drive: 2 Wire DC Differential, 0 to 28V max
Servo Clutch Engages: 1 Wire, 14V or 28V to engage AP Valid:> Open = Valid, Ground = Invalid
VG Excitation: 10VAC @ 506Hz Pre-Flight Test Out: 1 Wire 28V = Test Mode On
External Annunciation: 7 wires    
Part Number: Description:
065-0042-00 Autopilot Computer, 14 volt - obsoleted
065-0042-01 Autopilot Computer. 28 volt - obsoleted
065-0042-02 Autopilot Computer, 14 volt - standard
065-0042-03 Autopilot Computer, 28 volt - standard
065-0042-04 Autopilot Computer, 14 volt - With G-Dump
065-0042-05 Autopilot Computer, 28 volt - With G-Dump
065-0042-06 Autopilot Computer, 14 volt - With Improved G-Dump
065-0042-07 Autopilot Computer, 28 volt - With Improved G-Dump
065-0042-09 Autopilot Computer, 28 volt - For Lake Renegade
065-0042-12 Autopilot Computer, 28 volt - With Lightning Resistance
065-0042-15 REPLACES all Flavors
065-0042-16 For EFIS Installations


- Autopilot Computer
Price Condition Status
- Autopilot Computer
Price Condition Status

Click on a question below to see the answer. If you have a question about this model that is not answered below, please contact

In relation to NE (New) parts, many OEMs change their prices and availability without any notice to dealers or the industry. Therefore, through the REQUEST or RFQ indication, we ask that customers contact us for the most accurate price and availability.

In relation to SV & OH parts, the used parts aftermarket in the aviation industry is not an infinite supply. It is a dynamic, constantly changing market that is significantly affected by and susceptible to highs and lows in supply and demand. Therefore, although we attempt to, at times, we are unable to predict the exact moment when an item may be available. Once again, through the REQUEST or RFQ indication on our website, we ask that customers contact us for the most current and accurate price and availability.

Service bulletin 11 for the KI-256 reduces loading effects to the autopilot pitch and roll outputs.  It is required in most installations where the KI-256 is used with the KC-192 autopilot computer Part Number 065-0042-15.

None, they represent the same unit. Original King Radio part numbers were 9 digits. For example, 066-3056-01. During the Bendix and King merger (i.e. Bendix/King), a new part numbering system was created that converted these 9 digit part numbers to 12 digits. Therefore, 066-3056-01 became 066-03056-0001. Despite this numbering change, units that were originally from the King Radio design still have the 9 digit part number format on the unit dataplate. The 12 digit format for King units appears to be used for catalog and internal Honeywell purposes only. Therefore, any unit that has a zero in its third to last number (i.e. XXX-XXXX-X0XX) has a 9 digit part number (i.e. XXX-XXXX-XXX) on its dataplate / ID Plate.
In January 1989 Bendix/King changed from a nine digit to a twelve digit part numbering system. The new, larger 12 digit numbers allowed for the inclusion of software version into the last two digits of the part number for certain units in which software changed frequently such as EFIS and TCAS processors. Therefore, the two digits immediately preceding the software version indicate the hardware version of the unit.

Different software versions imply different operational features and/or interface capabilities and software modifications imply software repairs (bug fixes) to insure proper operation of these features and interfaces. Software version upgrades frequently require hardware modifications to the unit. Such hardware modifications accompanying software version upgrades do not necessarily change the hardware version of the unit.
Autopilot computers are built for specific aircraft. In addition, the KC-192 uses an adapter modules that are installed inside to properly configure the autopilot for the aircraft. When the existing KC-192 is replaced in an aircraft, the adapter module must be removed from inside the unit and installed into the replacement unit. There are warnings and indications about these details on the anti-static bag and on the unit as well. Please see images below.

Negotiating the exchange price of a unit only limits the allowable repair cap for the core unit. Southeast Aerospace's exchange transactions are based on the return of economically repairable core unit. Once the core is received and evaluated, the core repair cost incurred by SEA cannot exceed 75% of the original exchange price. That is, it cannot cost SEA more than 75% of the original OH/SV exchange price collected from the customer. Therefore, when and if an SEA exchange price is discounted, there is a risk that additional charges may be assessed once the core is returned and evaluated.

For more information, please refer to these other Exchange FAQs

According to Honeywell Installation Bulletin 385, KC-192 Part Number 065-0042-15 a direct replacement for any of the following part numbers:

065-0042-00 065-0042-05
065-0042-01 065-0042-06
065-0042-02 065-0042-07
065-0042-03 065-0042-09
065-0042-04 065-0042-12

The adapter modules used in the aircraft configuration have not been changed and function exactly the same exactly the same with the -15 computers. Click Here to download the Installation Bulletin.

When using the updated KC-192 -15 computer, check the mod status of the KI-256. If the KI-256 does not have Mod 11, then you may encounter alignment issues with the updated KC-192. Therefore, it is highly suggested (and necessary in some cases) to incorporate Mod 11 into the KI-256. KI-256 Service Bulletin 11 updates a PC board in the indicator that reduces loading effects to the pitch and roll outputs. The cost to incorporate Service Bulletin into the KI-256 is approximately $1000.

No, there are not different model computers that will replace the KC-191 or KC-192 computers. However, the -15 version of each computer replaces older, existing part numbers for each computer. Please refer to Honeywell Installation Bulletin No. 385 for reference.

Because the KC-192 computer is certified in 40 different aircraft types, adapter modules are used to provide specific software algorithms to the particular adjustments needed for proper performance in all modes for each specific airframe. There are 2 modules for each KC-192 flight computer encased in resin to prevent altering. The modules are installed into 40 pin sockets located on the inside of the top cover and the top board in the unit. Please see diagram below.

PLEASE NOTE - Publications are for Reference Only