Weather Radio User Manual

PRIMUS
r
880
Digital
W
eather
Radar
System
A28-1146-102-00
In-Flight Troubleshooting
7-1
7. In-Flight Troubleshooting
The PRIMUS
Ò
880 Digital Weather Radar System can provide
troubleshooting information on one of two formats:
D Fault codes
D Text faults.
The selection is made at the time of installation. This sectiondescribes
access and use of this information.
If the fault codes option is selected, they are shown in place of the tilt
angle.ThetextfaultoptionprovidesEnglishtextintheradartestpattern
areas.
Critical functions in the receiver transmitter antenna (RTA) are
continuously monitored. Each fault condition has a corresponding
2-digitfault code (FC). Additionally, a fault name, a pilot message,and
a line maintenance message are associated with each fault condition.
Faults can be accessed on the ground, or while airborne. The following
conditions indicate that fault information is being displayed:
D Display, indicator, or RTA malfunction
D FAIL annunciation on weather indicator or EFIS display.
If the feature TEXT FAULTS is enabled, theradar testpattern areawill
display plan English text fault information. If it is not enabled, only the
fault code is shown (one at a time) on the indicator or EFIS display.