UPS Airlines said that by August, it will fly the last of its 16 remaining 727s in its fleet to the New Mexico desert, where they’ll be stored. The planes, built from the early 1960s until August 1984, no longer fit UPS’ needs, spokesman Mark Giuffre said.

UPS has placed several orders for new planes over the past year or two, including 27 Boeing 767-300ER freighters announced last month.

The freighters are to be delivered between 2009 and 2012. The company also has firm commitments to buy 10 Boeing 747-400 jets to be delivered by next year.