in 1956 a twa constalation and a united dc-7 depart lax and don’t report over the grand canyons painted desert line at the same time (they were due to report at the same time) and are found in the grand canyon with no survivers first crash at the time to kill over 100 people the cause was lack of radar coverage and lack of communication with the ground.
next time the dc-10 fleet is grounded.
Harrison’s world 