Custom Kit Finder

Kit ID


Dual Outflow Valve Install

Control of both outflow valves, coupled with new nose cone vent, helps minimize pressurization surges. Outflow valves are controlled to close at a rate that insures smooth initial pressurization of cabin for improved passenger comfort. Models 681, 685, 690.

Issue Date



681, 690, 685 S/N 12000 THRU 12039