Ki 256 Installation Manual Jun 2026

Do not lubricate any part of the instrument. Lubricants can damage the diaphragms and gyro bearings.

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

: The unit weighs approximately 3.3 lbs and measures roughly 7.31" x 3.55" x 3.37" . Critical Installation & Maintenance Notes Do not lubricate any part of the instrument

Because the KI 256 is an integral part of STC-approved (Supplemental Type Certificate) systems like the KFC-200, it cannot be easily swapped for other instruments without comprehensive system changes, such as a Garmin G600 retrofit. Physical Characteristics: : The unit weighs approximately 3

While the is essential today, note that Honeywell no longer manufactures new units. Repair costs have risen (typical bench repair $1,200–$2,500). Several aftermarket options exist, but they require new installation manuals:

Finally, the manual covers the crucial phase of post-installation testing and calibration. This includes the "absolutization" of the VSI, a process unique to the KI 256, which allows it to function without a separate absolute pressure sensor. The manual guides the technician through the error checks and calibration steps required to certify the instrument as airworthy under the relevant Technical Standard Orders (TSO).