There have been a very similar but actually happening lock-up of all systems of F-16 and same with soviet Su-24 when flying below zero altitude. Designers haven't looked at the map to find out there are plenty of places with ground much below sea level, and it happened for Israeli F-16 near Dead Sea, and for soviet Su-24 near Caspian Sea, when they tried low-level flight.
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There have been a very similar but actually happening lock-up of all systems of F-16 and same with soviet Su-24 when flying below zero altitude. Designers haven't looked at the map to find out there are plenty of places with ground much below sea level, and it happened for Israeli F-16 near Dead Sea, and for soviet Su-24 near Caspian Sea, when they tried low-level flight.