Why does the aviation industry rely on a large amount of debt to operate?

Because of the high operating costs. First of all, the cost of buying aircraft is very high, and there are other high expenses, such as jet fuel cost, customs duty and value-added tax on aircraft purchase, engine depreciation fee, operating lease fee, amortization of high-priced turnover parts and aircraft engine insurance premium. , resulting in a very high long-term debt ratio in the aviation industry.