Last night I came into land at Gatwick with a Airbus A319-100, set everything correct and the speed was set to 141 knotts, then all of a sudden the throttle went mental up down really quick, and then starting to pitch the nose down and up and down and up!
This has happened to me a few time, surely it can’t be too slow?
Usually seizing throttle means speed maintaining. It can be seen during turbulence too. The throttle may be the reason of the phugoid, but I can’t be sure about that much. All I can be sure about is the speed maintaining.