Did a flight from KSFO to KABQ. I have AI traffic mix of WOAI, Alpha India, ultimate traffic and some that I have done myself. So I'm 5 th in line to take off from 28L Two planes in front of me is a beech 1900 waiting to taxi into position and hold. It receives instructions to line up. From there it just launches off the taxi way over 28L and 28R goes airborne out into the bay around 500 ft drops into the water circles back around in the water comes back to 28L turns to the runway heading out in the bay. Comes back up on land then takes off. All other AI take off just fine including another beech 1900. I don't know if the plane received ATC instruction right when it was going to disappear because of heavy ground traffic or there was another issue. What was crazy is while it was cruising in the bay the plane in front of me took off and I had to gun the throttles before the 1900 caught up with my 757 on takeoff...

Did a flight from KSFO to KABQ. I have AI traffic mix of WOAI, Alpha India, ultimate traffic and some that I have done myself. So I'm 5 th in line to take off from 28L Two planes in front of me is a beech 1900 waiting to taxi into position and hold. It receives instructions to line up. From there it just launches off the taxi way over 28L and 28R goes airborne out into the bay around 500 ft drops into the water circles back around in the water comes back to 28L turns to the runway heading out in the bay. Comes back up on land then takes off. All other AI take off just fine including another beech 1900. I don't know if the plane received ATC instruction right when it was going to disappear because of heavy ground traffic or there was another issue. What was crazy is while it was cruising in the bay the plane in front of me took off and I had to gun the throttles before the 1900 caught up with my 757 on takeoff...

You just can't get the staff these days! Only thing I can think if is that it may be a contact points issue on the aircraft - if its wheels leave the ground momentarily it will probably consider itself airborne and therefore fly off in the direction it is facing but that doesn't really explain all that you saw. It may be worth checking the flight dynamics of the aircraft that did this in case they are not quite right. It could also be the airport at fault causing the wheels to leave the ground (runway at slightly different level to taxiways?) although generally AI will not be affected by this and are more likely to stay at exactly the same altitude "on the ground" whether hovering or sunken. Personally, if it was a one-off I wouldn't worry too much; odd things do happen with AI traffic and I'd just sack the pilot. John