Originally Posted by
togsdragracing
Dumb question: is this stuff measured wheels off to wheels down, or gate to gate?
There's no such thing as a dumb question, only a dumb answer.
The timings for last month's record-breaking Norwegian JFK-LGW flight were (all Z):
Out: 16:20
Off: 16:36
On: 21:47
In: 21:55
So the claimed 5 hrs 11 mins was from wheels-off to wheels-on.