aircraft rentals. For the third quarter and the nine- month period of 2019, costs of sales and services were accounted for 85.1 percent and 84.5 percent of total expenses respectively. Fuel Costs: fuel costs
rentals. For the second quarter and the six-month period of 2017, costs of sales and services were accounted for 85.2 percent and 85.5 percent of total operating expenses. Fuel Costs: fuel costs are
rentals. For the third quarter and the nine-month period of 2017, costs of sales and services were accounted for 82.9 percent and 84.9 percent of total operating expenses. Fuel Costs: fuel costs are
expenses, aircraft repair and maintenance costs, and aircraft rentals. For year 2016 and year 2017, costs of sales and services were accounted for 83.3 percent and 84.5 percent of total operating expenses
and Services Costs of sales and services principally consist of fuel costs, aircraft repair and maintenance costs, personnel expenses, cost of passenger service and aircraft rentals. For year 2017 and
sales and services principally consist of fuel costs, aircraft repair and maintenance costs, personnel expense, cost of passenger services and aircraft rentals. For the second quarter and the six- month
principally consist of fuel costs, aircraft repair and maintenance costs, cost of passenger services, personnel expenses and aircraft rentals. For the second quarter and the six- month period of year 2018
aircraft rentals. For the third quarter and the nine- month period of 2018, costs of sales and services were accounted for 83.9 percent and 84.5 percent of total expenses respectively. Fuel Costs: fuel costs
, aircraft repair and maintenance costs, personnel expenses, cost of passenger service and aircraft rentals. For year 2018 and year 2019, costs of sales and services were accounted for 84.3 percent and 82.9