You're correct...and I left out the runway
The difference between sat in an aeroplane and sat in front of a 'puter.
I must admit I
usually put in the second 'behind' and that
may be incorrect...but I am
reasonably sure on one or two occassions I have not and then been challenged as a result.
Like I said, I try but rarely with 100% perfection over the course of a flight or series of flights.
Even after 27 years I am a work in progress