Override System
When the primary drive control fails to operate, pressing PITCH TRIM
REL. button, located on the control wheel, provides the following
functions:
• Disconnects power from trim unit primary channel.
• Powers up to the secondary channel.
• Powers up the override switch.
• Disconnects the autopilot
When PITCH TRIM REL. button is pressed, the RESET pushbutton
illuminates and then by pressing the HORIZ TRIM switch in NOSE UP
or NOSE DN position, the secondary drive control of trim actuator is
energized, causing the horizontal stabilizer to move in desired
direction. Autopilot is inoperative when override system is operating.
When RESET pushbutton is pressed, the secondary drive control
deenergizes (light - out). Power is restored to the primary drive system.
Gulfstream G200 - Trim System
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