OFF - Removes power from associated Yaw Damper system.
INOP Lights - Indicates associated Yaw Damper system is inoperative, due to a fault or the switch being off. The INOP light is also ON during IRS alignment.
Passenger Oxygen Switch
RESET - Flow control units are closed electrically if cabin altitude is below 12,000 feet.
NORM - System automatically activates when cabin altitude reaches approximately 14,000 feet.
ON - Activates Passenger Oxygen distribution system, regardless of cabin altitude. If activated below 14,000 feet,
oxygen will flow, but at a reduced rate proportional to cabin altitude.