Warning Lights, Switches and Button
Autoland Warning Light
The AUTO LAND warning light is armed below 200 feet RA in the LAND mode. It illuminates when any one of the following occurs:
- Both autopilots disengage.
- Localizer deviation excessive (1/4 dot above 15 feet RA) or glideslope deviation (one dot above 100 feet RA) detected. The localizer and glideslope scales flash on the PFD.
- Loss of localizer signal above 15 feet RA, or loss of glideslope signal above 100 feet RA. (The flight director bars flash on the PFD; however, the LAND mode does not disengage.)
- The difference between the two radio altimeters is greater than 15 feet.