Originally Posted by slowplay

You're number is low if you include all the DC-9 and 747-200 series airframes. While this number changes regularly, there are 4 767ER, 16 757-200, and 7 767-300 domestic stored that could be considered economically viable with good oil prices and consumer demand. Many of those airframes are 20-25 years old, however, so they are relative maintenance hogs with have older engines and electronics.