Provides a means to prevent batteries from overheating and thereby increasing battery life.
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121 Fuel Vent Check Valve Install
Prevents aircraft with long-range fuel systems from venting fuel overboard through wing vents during fueling and taxiing. Models 680T, 680V, 680W, 681.
120 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.
119A Battery Temperature Monitoring System
Provides a visual means for monitoring battery temperature, which can be lowered by reducing electrical load, thereby increasing battery life. Model 690.
118 Landing Gear Warning Horn Silencer Install
Allows the pilot to silence the gear warning horn when descending from altitude with the power levers in the flight idle position. Gear warning horn will automatically reset when power levers are advanced or, when flaps are lowered with throttle(s) retarded. Model 690 SN 11003 through 11019.