Are you using a or an alternative 400 Hz power supply?
Secure the KI 256 using the provided mounting hardware.
⚠️ The KI 256 installation requires . Proper installation must be done by a certified avionics technician.
This article consolidates the essential installation steps, wiring diagrams, post-installation testing, and common pitfalls—based on official OEM documentation and field service experience. ki 256 installation manual
After installation, a thorough functional test and calibration are mandatory. The gyro requires time to spin up to speed before it will operate correctly. The engine must be running, the vacuum system operating, and you must allow the gyro three minutes to come up to speed. If the unit is electric, it must be erected immediately after power-on by pulling the "Pull to Erect" knob and holding it out for approximately three seconds.
Wire the gyro according to the installation manual, ensuring proper DC voltage is applied.
: Operates on 14/28 VDC (approx. 0.7 AMP max) and 10 VAC, 430Hz (0.2 AMP max). Dimensions : Approximately 3.55" W x 3.37" H x 7.31" L. Weight : Approximately 3.3 lbs. Are you using a or an alternative 400 Hz power supply
The KI 256 contains a . Never apply power while the unit is unmounted or in a non-level aircraft attitude. This can topple the gyro and cause immediate failure.
A secure and correctly wired interface is essential for the flight director and autopilot functions. Vacuum System
When updating internal parts, such as the Command Bar Board , technicians must verify that wire connection points match the original layout, though specific pin locations (like E114) may shift between board revisions. Verification and Compliance Proper installation must be done by a certified
Verify that the horizon bar erects to a level position matching the physical attitude of the aircraft on the ramp.
Pins provide buffered pitch and roll attitude signals to the flight computer.
: Operates on a combination of 10 VAC and 28 VDC .