Trio Avionics Pro Pilot - Manual (Page 23)

Trio Pro Pilot Manual 3.8
23
GPS Data Anomalies
DIS?
DIS? is displayed in this field whenever the maximum distance
in the GPS data stream is greater than 999 miles. Tracking
functions are not affected by this condition.
TRN?
The TRN? warning is displayed in this field when the Pro Pilot
detects a negative closing velocity (going away from the “TO”
waypoint).
This usually occurs when a waypoint greater than ± 90 degrees from the current waypoint is selected.
No pilot action is required.
SPD?
The SPD? warning field is presented to the pilot when the
parameters in the GPS data stream indicate a condition that
results in an overflow of the ETE computation.
Under normal operation, these conditions should not exist; however, momentary corruption of the GPS
data during signal acquisition or waypoint transitioning can cause these to appear. No pilot action is
required.
Tracking functions are disabled until the condition is cleared automatically, usually on the next
GPS update. Wing leveling remains in operation.