11.   That occurs when the aircraft is descending too fast with too little forward speed, causing the craft to lose lift.

12.   The British balloon lost lift over Algeria and landed in the desert, and two days later the Swiss balloon developed a kerosene leak that nearly suffocated its crew.

13.   The jet would lose lift and unexpectedly roll to the left or right during certain high-speed dogfighting maneuvers.

14.   The Osprey entered a patch of disturbed air, causing it to lose lift.

15.   The problem cropped up during test flights when the Super Hornet would unexpectedly lose lift from its wing and bank to one side.

16.   The pilot banked the craft slightly to the right to refine his course, and then the right rotor lost lift and the Osprey flipped over.

17.   Then the right wing loses lift, because it is shielded by the fuselage and is almost parallel to the direction of travel.

18.   The wings lose lift.

19.   This would result in less noise during landing, since the jet could fly at slower speeds without losing lift.

20.   With the air blowing across the wing from the wrong direction, the plane loses lift, resulting in a sudden drop in altitude.