B737 minimum maneuver speed amber band changes with speedbrake
Weird thing I observed on my last flight was, the amber band I mentioned above, I thought it is meant for next flap placard speed in sequence of 1. 5. 15. 30, and 40 however during flaps 5 condition with S/B extended, amber bands moved inward(both bands) and became tighter. FCOM seems not explaining the reason, however I am wondering if min maneuver speed does change with S/B corresponding to flap placard speed?