Not true, 95% of commercial aircraft have a TAWS system [0] that can show relative terrain on their navigation displays and provides FLTA alerts (forward lookin

Not true, 95% of commercial aircraft have a TAWS system [0] that can show relative terrain on their navigation displays and provides FLTA alerts (forward looking terrain avoidance) by using an onboard terrain database. This is an FAA requirement for any aircraft with 6 or more passengers. [0] https://en.wikipedia.org/wiki/Terrain_awareness_and_warning_system https://en.wikipedia.org/wiki/Terrain_awareness_and_warning_...