Installation manual
6-11 General 
Short Text 
Long Text 
Comments 
Next Leg [Leg 
Course] In <xx> s* 
Next Leg [Leg Course] 
Displayed when there is 
10 +/- 1 seconds until 
the start of a turn up to 
120 degrees OR 30 +/- 
seconds until the start 
of a turn of more than 
120 degrees. 
Begin Descent in 
[Time to Top of 
descent in seconds] 
seconds* 
Approaching Top Of Descent 
Displayed when there is 
10 +/- 1 seconds until 
the crossing of the top 
of descent point. This 
message is 
accompanied by an 
aural TOD chime. 
Begin Descent Now* 
Sequenced Top of Descent 
Displayed when the 
time to reach the top of 
descent point is zero. 
Check Navaid 
Identifier 
Decoded navaid Identifier did not 
match approach navaid 
Displayed when the 
active approach is 
based on a localizer or 
a VOR and that 
approach is not 
authorized for GPS 
overlay, the aircraft 
course is within 45 
degrees of the final 
approach course, the 
course to the active 
waypoint is within 45 
degrees of the final 
approach course, the 
distance to the final 
approach fix (FAF) from 
the current position is 
less than 4 NM, the 
frequency tuned by the 
nav radio matches the 
frequency of the 
approach navaid and 
the identifier decoded 
by the nav radio does 
not match the identifier 
of the approach navaid. 
Lightning Sensor 
Error* 
Lightning sensor recoverable fault: 
[fault codes] 
An internal warning 
condition within the 
lightning sensor has 
occurred and it may 
clear itself or clear after 
a power cycle of the 
lightning sensor. 










