The original gas discharge display (GDD) for the KY-197A has been phased out by Honeywell. A new display with LED technology is available for the KY-197A by way of Service Bulletin 9. The new LED provides a brighter, sharper display with longer life. SB 9 consists of replacing the display and one resistor, removing two resistors, and adding two wires.

Please note that the Service Bulletin mainly applies to KY-197A -30/-60 with S/N 15080 and below; and KY-197A -10/-11/-12/-31/-32 all serial numbers. Units will serial numbers above those stated have Mod 9 incorporated during original manufacturing.

Southeast Aerospace can update your KY-197A to the more reliable LED display. Pricing varies based on time and materials needed. For complete details, please contact Southeast Aerospace Tech Support at mro@seaerospace.com or complete a Repair Request at https://www.seaerospace.com/mro/repair-request