They were on the ground longer than expected in Gander and subsequently ran out of hours, but as it was known in advance VS were able to postion a crew in DUB for a speedy turn there.
2 man crew, not sure what the hours limit is, approx 8hr flt, +90 mins before the flt, +90 mins due already overflown Gander and had to turn back, +120mins on the ground in Gander, turns into a very long day. If they could of gone all the way to MAN they would of.
The fire engine is in attendance as the a/c is being refuelled remote with 400+ pax onboard, standard safety precaution.