Does much damage occur to BigJets in the 'on ground' phase?
'fraid so, much more often than any of us would like...Usually baggage belts/catering trucks/toilet carts and of course airbridges/jetways, all making "positive" contact with the airframe, causing different degrees of damage, from a "knock" that requires checking by the engineer, right up to incidents causing structural damage and requiring days in the hangar...