If the Earth were truly a sphere 25,000 miles in circumference, pilots would always adjust their altitudes downwards so as to not fly straight off into “outer space.” An airplane pilot who wanted to maintain their altitude at a typical cruising speed of 500 mph, would have to constantly dip their nose downwards and descend 2,777 feet (over half a mile) every minute! Without adjustments, in one hour’s time the pilot would find themselves 31 miles higher than expected.
Further proof the Earth is Flat.