Dutch roll
Noun
Meaning
Dutch roll (plural Dutch rolls)
(aviation) An aircraft motion consisting of an out-of-phase combination of yaw and roll, especially prominent on sweptwing aircraft.
Examples
Not recognizing the Dutch roll, the crew used the rudder to stay on course, which exacerbated the instability, leading to an unrecoverable flight condition.
The 747 was found to be largely immune to " Dutch roll ", a phenomenon that had been a major hazard to the early swept-wing jets.