Before revision: The most widely used trijets are the DC-10 and the However, because the average age of trijets and COVID-19 Pandemic, most non-private operaters choose to retire quadjets and trijets and replace them with more efficient and cost-saving twinjets.
After revision: However, because the average age of trijets and COVID-19 Pandemic, most non-private operaters choose to retire quadjets and trijets and replace them with more efficient and cost-saving twinjets.