Bit of a delayed reaction here, but isnt the MYT G-GTDK rather than C-? It appears to be re-registered...
BAL operate a weekly 763 to LEPA, not as heavy fuel wise of course, but does it go fully laden pax/baggage wise?
BAL send a B762 yearly to TBPB and that gets out of EGGD fine, so surely long haul flights would be possible..?
Dan.