The 741 was USA East Coast only, she also could not do LHR-NBO non-stop either.
Back in BOAC days we flew that sector daily on the 741. Of course the trips in those days were fabulous. Three week trips to OZ and shuttling around the Far East back and forth to SYD/MEL/AKL. One of the best trips I did was a 10 day NBO/MRU trip with a week off in MRU. QF did the same on a 707 SYD/PER/MRU. It was one giant party!!