4 ms·

There's no trim tab on a 737 - the whole horizontal stabilizer is moved to trim the aircraft in pitch. Normally this is done electrically, but the stabilizer j

There's no trim tab on a 737 - the whole horizontal stabilizer is moved to trim the aircraft in pitch. Normally this is done electrically, but the stabilizer jackscrew can also be moved using manual trimwheels that move the jackscrew using physical cables. Whether this is possible at high airspeed while the stabilizer is trimmed nose down, and the elevator is being pulled up as hard as you can to avoid diving - that's the question that is being raised. Edit: this shows the jackscrew in operation: https://www.youtube.com/watch?v=rxPa9A-k2xY https://www.youtube.com/watch?v=rxPa9A-k2xY

VBprogrammer 8y ago
Something else I've started to wonder about is what the manouvering speed is on a 737. I can't find a good reference but 280 knots is suggested as a turbulent air penetration speed which should be in the same ballpark Applying full back elevator above this speed can bend the airplane (cyclic movements even more so).
- TheSpiceIsLife 8y ago
  The rudder / vertical stabiliser snapped off this one https://en.wikipedia.org/wiki/American_Airlines_Flight_587 https://en.wikipedia.org/wiki/American_Airlines_Flight_587