HELIOS AIRWAYS FLIGHT HCY522
AT GRAMMATIKO, HELLAS
On August 14, 2005, Helios Airways Flight 522 crashed into a mountain while on a flight from Larnaca, Cyprus. All 121 passengers and crew were killed in the crash, making it the deadliest in Greek history.The Boeing 737-300 aircraft departed Cyprus with an improper pre-flight pressurization configuration, which lead to pilot incapacitation due to hypoxia. The aircraft eventually ran out of fuel and crashed.“On 14 August 2005, a Boeing 737-300 aircraft, registration number 5B-DBY, operated by Helios Airways, departed Larnaca, Cyprus at 06:07 h for Prague, Czech Republic, via Athens, Hellas. The aircraft was cleared to climb to FL340 and to proceed direct to RDS VOR. As the aircraft climbed through 16 000 ft, the Captain contacted the company Operations Centre and reported a Take-off Configuration Warning and an Equipment Cooling system problem. Several communications between the Captain and the Operations Centre took place in the next eight minutes concerning the above problems and ended as the aircraft climbed through 28 900 ft. Thereafter, there was no response to radio calls to the aircraft. During the climb, at an aircraft altitude of 18 200 ft, the passenger oxygen masks deployed in the cabin. The aircraft leveled off at FL340 and continued on its programmed route.