On August 14, 2005, Helios Airways Flight 522 carrying 115 passengers and 6 crews crashed into a mountain in Greece (AAIASB,2006). The flight was scheduled to depart from Larnaca Cyprus for Prague, Czech Republic. During the investigation, the Air Accident Investigation & Aviation Safety Board (AAIASB) found that the loss of cabin pressurization resulted in the depletion of oxygen which incapacitated the crew (AAIASB, 2006). The aircraft continued to fly on autopilot until it eventually ran out of fuel and crashed. All 121 passengers and crew perished during the accident.