Dutch roll
Never operated the B727 and do not know if it is less susceptible to Dutch rolling than the B707, but would think there is more to it than a 3 degree difference in wing sweep. (B707 35 degrees - B727 32 degrees). I remember induced Dutch Roll and recovery certainly grabbed our attention. FL150 over Bass Strait when converting to B707 and being trained by Qantas. Interesting exercise to say the least. Why did we do it in the aircraft and not the Sim? Because the Qantas Sim was dismantled and sent to Aer Lingus as soon as we completed the Sim training phase of conversion.