I remember that there were countless incidents occurred in which the aircraft sits on the tail as the aircraft was heavily loaded at the back of the cargo and/or cabin compartments or the cargo compartments were offloaded incorrect order. I know that these incidents are more commonly happen in cargo aircrafts.
Is there a risk that the aircraft will sit on the tail during the pushback process as a result of the tri-cycle design of the aircraft?
Is there any tail tipping incident reported during pushback/towing operation?
Which types of aircraft (narrow/wide body) can this risk be higher?