Air Data CMPTR / Stall Test Switches

• Air Data CMPTR - Initiates 3-phase Test of associated Air Data Computer when held. Switch must be held for at least 7 seconds if completion of all phases of Test is desired.
• Stall - Activate stick shakers on both control columns through the associated Stall warning system when actuated individually.

EQUIP Cool, INOP
Tests the Equipment Cooling overheat and smoke detectors.

Yaw DMPR
Initiates Test of associated Yaw Damper system.

Strut Leak, Fuel QTY

• Strut Leak - Tests the Strut Leak detection system.
• Fuel QTY - Causes all active lights segments in the Fuel Quantity indicators to come ON if the Quantity measuring and indicating system is satisfactory, the low FUEL message to appear on EICAS, the FUEL CONFIG light to come ON, and the Fuel temperature indicator to indicate - 185°C.

Wing Anti-Ice, Window / Probe Heat

• Wing Anti-Ice - Opens both Wing Anti-Ice valves on the ground if pneumatic pressure is available, bypassing the air/ground logic.
• Window / Probe Heat - Applies Heat to, and simulates an overheat condition in, the Window Heat system, causing all Window Heat INOP lights to come ON.

GND PROX

• GND PROX - Tests the GPWS. Holding the switch (less then 5 seconds) causes the GND PROX and PULL UP lights to come ON and the GLIDE SLOPE and PULL UP aural to sound. Holding the switch (more then 5 seconds) Test the complete vocabulary by sounding all the voice messages associated with the GPWS.
• Duct Leak - Tests the Duct Leak detection system.

Config T / O

• T / O - Activates Test of takeoff Configuration warning system if at least one of the conditions is improper for takeoff.
• LDG - Activates Test of Landing Configuration warning system regardless of Configuration.