I'm just looking for an explanation of what I saw yesterday at LIS.
I was in the bus bringing me to my BA A319 back to LHR when I saw the AF A320 that had taken off 15minutes earlier.
It was approaching the runway with retracted landing gear! I actually thought it was going to crashland or something.
Then, when it was about 10m (this might be not exactly right, but they were very close) from the ground, they suddenly put the landing gear down, quickly touched the runway, retracted the gear immediately and gained altitude and that
Any thoughts on what this could have been???