Video images purportedly capturing the 23 July departure of flight AT811 to Casablanca show the aircraft (CN-RNV) initially rotating with a high nose-up attitude.
It momentarily lifts its main landing-gear before settling and lifting off again, only to touch down a few seconds later. The aircraft then reduces its pitch before becoming airborne and climbing away.
Despite the attitude the aircraftâ€™s tail did not appear to make contact with the runway.
Flaps and slats were deployed??