Quick Change
With most of its aircraft flying primarily on weeknights, the airline was eager to find other ways to produce income from its fleet. In the 1990s, eight 727 freighters were converted (at a cost of $2.5 million each) into 727-100QC (QC=Quick Change) freighters with the ability to be re-converted into passenger aircraft for the purpose of chartered flights. After disappointing results, in 2001, UPS ended charter service with quick-change freighters, with the aircraft returned to cargo service.