Superspotter,
turning off that escalator is a great idea.
It saves a great amount of Jet A1.
It's non-availability causes fat businessmen and overweight chavs (the airport's predominant clientele) to climb stairs, therefore losing body-mass.
Over 12 months these little weight losses all add up to reduced take-off weights.
Turn off the moving walkways too. In fact, remove them completely.
Have another cup of tea!
