#HELIOS AIRWAYS AWARD MANUAL#

No further Communication could be made with the aircraft. However, the captain, under the influence of hypoxia's initial symptoms, disregarded the question, and instead asked in reply, 'Where are my equipment cooling circuit breakers ? . The engineer (the one who had conducted the pressurization leak check) asked: 'Can you confirm that the pressurization panel is set to AUTO?' He also spoke to the ground engineer, complaining about the 'cooling ventilation fan lights were off. The captain contacted the Helios operations centre and reported 'the take-off configuration warning on' and 'cooling equipment normal and alternate off line. The passenger oxygen light illuminated when, at an altitude of approximately 18,000 feet, the oxygen masks in the passenger cabin automatically deployed. Equipment cooling warning lights came on to indicate low airflow through the cooling fans (a result of the decreased air density), accompanied by the master caution light. Overhead panel in the cockpit mushroomed with multiple warning lights in the next few minutes. This was the time, when the Cockpit crew could have stopped the climb, but they ignored the warning assuming it as a 'take-off configuration warning'.

#HELIOS AIRWAYS AWARD MANUAL#

The aircraft took off with the pressurization system still set to 'manual,' and the aft outflow valve partially open.Īs the aircraft climbed with the manual mode, the pressure inside the cabin gradually decreased, and at an altitude of 12,040 feet, the cabin altitude warning horn sounded.At the end of the check , the engineer failed to reset it to 'auto' on completion of the test.Ĭockpit crew also failed to notice the 'Pressurization mode change' at numerous occasions and continued with the take off after the aircraft was declared serviceable. The Ground engineer carried out inspection and performed a pressurization leak check using 'manual mode' without the engines. The accident aircraft 'Olympia', registered as 5B-DBY arrived at Larnaca International Airport with a PIREP (Pilot Report) of 'frozen door seal, and abnormal noises coming from the right aft service door'. On that day ,the aircraft was flying from 'Larnaca, Cyprus' to 'Prague, Czech Republic', with a scheduled stopover at 'Athens, Greece', but that crashed on 14th August 2005, killing all 121 passengers and crew on board due to Hypoxia induced Crew incapacitation and Fuel Run out. The Boeing B737-31S aircraft belonged to the Helios Airways and unfortunate journey was Flight 522 on 14 August 2005 that crashed Killing all 121 passengers and crew on board near Grammatiko, Greece. ► Incapacitation of the crew due to hypoxia,

► Non-identification by the crew of the true nature of the problem, ► Non-recognition by the pilots that the pressurization system was set to 'manual', The Hellenic Air Accident Investigation and Aviation Safety Board (AAIASB) concluded that below chain of events became the reason of the this Fatal accident.

Helios airways award