Its true that the last couple of years they have lost many contracts accross the country. However, does anyone else agree that the handling industry seems to go in cycles?
For example, a company agressively grows, grabbing new contracts left right and centre, undercutting rivals etc etc. Then somewhere down the line it appears they may have grown so big that they are having trouble sustaining a great level of service all the time, especially at those driven down prices they offered back when the contracts were won. Customer airlines becoming less happy with the service, and start looking elswhere. Meanwhile, those competitors you took the contract from, have had time to regroup and get there house in order a bit more, offering a better service albeit being a smaller operation. They begin winning back some contracts and the cycle continues from there....
Perhaps Aviance are in the lull of the cycle and need to sort things out a bit while their rivals have grown aggressively?