AeroNav 900/880 Series Pilot’s Guide
89000039-010
7-12 General Rev 1 May 2019
The data stream from the radar contains information that
should not be used.
Sensor mode is <sel>. Selected mode
is <rep>
The selected mode <sel> does not match the reported
mode <rep>.
Radar fault code: <codes>
The sensor is reporting the fault codes that are shown.
TIS traffic communications have ceased for more than 12
seconds.
No TIS ground station is available or communications
have ceased for more than 60 seconds.
Premature Descent, below glide path
TAWS PDA algorithm has determined the aircraft is below
glide path.
TAWS EDR algorithm has determined a potential CFIT
scenario is developing - recover the aircraft.