Hi E190 seniors:
From AOM,they said this button is to inhibit the landing aural warning in the event of dual radio altimeter failure.(when pushed ,a white striped bar will illuminate)
Then, there are 3 additional conditions that will make white striped bar extinguish :
1.Thrust levers are advanced >38 deg for two engs.OR
2.Thrust levers are advanced >57 deg for one eng.OR
3.Landing flap set without any landing gear down and locked.
Can anybody share me some plain explanation what is the reason behind these conditions.
Thank you so much.
