EGPWS terrain warning

EGPWS terrain warning

EGPWS = Enhanced Ground Proximity Warning System

https://ja.wikipedia.org/wiki/%E5%AF%BE%E5%9C%B0%E6%8E%A5%E8%BF%91%E8%AD%A6%E5%A0%B1%E8%A3%85%E7%BD%AE