Originally Posted by
hoover
The flap and speed brake limitation is SW imposed. There's nothing in the Boeing manual about that.
Boeing FCTM (Flight Crew Training Manual) states: "The use of speedbrakes with flaps extended should be avoided, if possible. With flaps 15 or greater, the speedbrakes should be retracted. If circumstances dictate the use of speedbrakes with flaps extended, high sink rates during the approach should be avoided. Speedbrakes should be retracted before reaching 1,000 feet AGL"