Originally Posted by
Doug E Style
Unfortunately the “all lights on when line-up clearance received” operators cause problems in the dark on runways which have access from and aircraft waiting on both sides (eg. Heathrow 09R/27L).
True. Another more widespread problem are crews who switch on the strobe lights as soon as they get a conditional line up clearance! They can't yet line up because there's traffic on final or on the runway, but in the mean time they are blinding the traffic behind them just because they think it's SOP.