A World Atlantic Airlines McDonnell Douglas MD-83, registration N808WA performing flight ZQ-1110 from Miami,FL (USA) to Santa Clara (Cuba), was climbing through about FL260 out of Miami when the crew initiated an emergency descent, passenger oxygen masks were released, due to the loss of the cabin pressure. The aircraft returned to Miami for a safe landing about one hour after departure.
A replacement MD-83 registration N802WA reached Santa Clara with a delay of about 4.5 hours.