LHR-ORD is a route that is flown with a variety of aircraft. Earlier on in the year I was in ORD for two days. One day they flew in G-VPUF, the second day they flew in G-VSKY. So the schedule changes all the time on the ORD route. This happens on the IAD route aswell. The 744 is flown in 3/4 of the time, the 742, the other 1/4 of the time. VS has also started LHR-DEL service. Sometimes that is a 742, sometimes a 744. So this may also mess up the LHR-ORD route aswell. Don't forget that planes are slowly being painted into the new c/s so some substitutions of different planes will take place on some routes. For instance, temporarily, it looks like a 742 has been deployed on one of the LHR-JFK routes. So the schedule on LHR-ORD is always subject to change.
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