RPM
Illumined red when engine RPMs are out of limits
ALT
Altitude of the vehicle exceeds mission limits, aircraft climbs when commanded to descend, aircraft descends when commanding to climb, aircraft is climbing or descending to quickly.
IAS
Indicated airspeed of the vehicle exceeds controller limits
SYS
System voltages or temperature of the vehicle exceed limits or an air data fault has occurred
GPS
GPS system is not providing valid position and velocity data or PDOP is larger than configured in display settings
LINK
Receive signal strength indicator or link acknowledgment ratio exceed limits
COMM
Telemetry from the vehicle is not received within 10 seconds
TER
Turns yellow 45 seconds to terrain impact. Turns red when 25 seconds to terrain impact
SPC
Turns yellow 45 seconds to airspace violation. Turns red when 25 seconds to an airspace violation.
Aero T.
Aerodynamic termination is invoked by the auto pilot due to mission limits.
DMan On
Deadman output line is released by the auto pilot due to mission limits, not used in vanilla
NAV
The is somthing wrong with the navigation sub system. If the cursor is hovered over the light, a short description of the problem will be displayed.
GPS/INS
AHRS (Altitude Heading Reference system) is displayed to indicate the nav system is in its backup mode. May read other modes depending on what corrections the operator has enabled.
Timer
Flight timer has expired. A Pop-up warning box says flight timer has expired. May read a negative value.
