Ensure the aircraft electrical system meets the 14V/28V requirement.
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: Ensure the "Gyro" or "FD" warning flag completely retracts out of view once nominal vacuum levels and electrical excitation voltages are present.
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Proper mounting protects the internal delicate components from structural harmonic vibrations. ki 256 installation manual
: Extract the KI 256 from the panel and mount it directly onto a precision gyro tilt stand. Connect it back to the aircraft harness using an approved gyro extender cable.
The KI 256 was standard or optional equipment in numerous light to medium business aircraft from manufacturers like Piper.
The KI‑256 does not work alone. It is designed to be the attitude reference and flight‑director display for a complete Bendix/King autopilot suite. In a typical installation:
Monitor the gyro spin-up time. The horizon bar should erect and stabilize within 3 minutes. Ensure the aircraft electrical system meets the 14V/28V
Configure the KI 256 according to your application requirements.
Check that the horizon bar erects to a level position matching the aircraft's physical water line. Autopilot Null Calibration
: Supplies pitch and roll attitude data to the flight computer and receives command bar drive signals back from the autopilot computer.
BendixKing KI 256 Flight Command Indicator is a critical component of classic flight control systems like the KFC-150 and KFC-200. Because this unit is both a self-contained vertical gyro and a flight director, following the KI 256 installation manual The KI 256 was standard or optional equipment
The is a core component of several legacy BendixKing autopilot systems, including the KFC-150 , KFC-200, KFC 225, and KFC 250. As a self-contained vertical gyro, it provides real-time pitch and roll attitude data while featuring a single cue command bar to display flight director guidance. Technical Specifications & Requirements
: Level the precision tilt stand exactly using the integrated bubble levels. Ensure the non-tested axis remains locked precisely at zero.
The KI‑256 is available in two primary mounting configurations:
Once integrated into the aircraft panel, the KI 256 must be calibrated in tandem with the flight computer using specialized ground service equipment like the BendixKing KTS 150 Test Set .
By following the guidelines and recommendations provided in this article, users can ensure a successful installation of the KI 256 and optimize its performance in their specific application.