Worldwide Motor and Flight Limited (WMF) operates in motor and flight industry is discussing a plan to sell a disposal group, the airline operation with licence granted by the local government. The sale of the group requires the approval from the relevant regulatory bodies, which could extend the period required to complete the sale beyond one year. Actions necessary to obtain that approval cannot be initiated until after a buyer is known and a firm purchase commitment is obtained. However, a firm purchase commitment is highly probable within one year. Discuss when WMF can classify the disposal group as held for sale.

(Please answer with IFRS 5 as the underlying context)