Originally Posted by
DYKWIA
What's the normal routing when there aren't taxiway works (if there is one)? Could be they've flown there countless times, and muscle memory kicked in , despite reading back the correct route...
I suspect that's most likely it - the normal route when landing on 4R is N3 (or R), N, cross 22R and hold short 15L which is why muscle memory may have come into play and the pilots didn't request a clearance
Edit: here's BA213 on 3 Oct (no construction then), and same route for 2 Oct as well: