This morning, I took flight VS156 from LAS to LHR, aboard a 787, tail number G-VSPY according to flightradar24. The pilot made a strange announcement before takeoff - specifically, that due to a recent maintenance procedure, the pilots would not be able to raise the gear for the first 10 minutes of flight. The rest of the flight continued normally. What was the procedure likely to be, and why would leaving the gear down be safer?
It could be that the Wheel Well Fire Detection System was inoperative.
According to the B-787 "Master Minimum Equipment List" (as shown from this website, in pertinent part) the Wheel Well Fire Detection System:
"May be inoperative provided landing gear remain extended for ten minutes after takeoff."