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When the 737 NG was first introduced it did lose a number of elevators in flight, due to excessive turbulence from the flight spoilers. So the max speed for spoiler deployment was reduced to 240 kt for a number of years - which was a pain in the arrse on the descent, because the spoilers are only really effective at high speeds (when the angle of attack is reduced).
To cure the problem, an extra hinge-point was added to the NG elevator, to stop them falling off.
Needless to say, losing elevators can spoil your day.
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