As Bombardier (BDRAF) is facing debt that will be maturing in the coming years starting 2021, the company has explored the sale of some of its business units to generate cash. One of the most straightforward ways for the Canadian debt-laden company is to sell its stake in the Airbus A220 program. So far, the agreement between Bombardier and Airbus (EADSF) (EADSY) has required the Canadian jet and train maker to fund some $925 million spread over five years before additional costs are being carried by Bombardier, Airbus and Investissement Québec on a pro-rata basis.