Accident in which 121 passengers lost consciousness before the plane crashed

The Helios plane crash, which took place in 2005 and is the deadliest accident in the history of Greece, is still remembered as an unforgettable event despite the past 17 years. So what caused this plane to crash?

On a hot August day in 2005 Boeing 737-31S taking off from Cypruswas making a trip to the Czech Republic via Greece.

The plane, which had just arrived from London the previous day and was checked, looked ready for flight. Even the plane minor problems detected and these problems were fixed by the technical team before the flight. Unfortunately, a small mistake made before the flight caused the plane to crash.

The pilots could not perceive how great the problem was and the response was inadequate.

making the flight Helios Airwayswas a company established in Cyprus and operating economical flights. At 09:00 on the day of the flight, Helios Airways’ Boeing 737-31S took off at 09:07 with a 7-minute delay.

At first everything seemed fine, but soon the plane was at an altitude of about 3,650 meters. fault alerts from aircraft systems started to come. At this stage the pilots thought it was unimportant and generally checked the systems. did not take any action.

in-flight pilots unaware of pressure losswhen 5,500 meters is reached while continuing to raise the aircraft. oxygen masks opened.

Oxygen Masks

After this security measure, the pilots, who realized that there was an air/pressure problem on the plane, immediately contacted the airline. with the engineers they tried to fix the problem. While communication is very difficult due to pressure loss, at 09:20 Communication with the aircraft was lost and 3 minutes later, the plane reached 10,000 meters and continued its journey straight.

It has now been noticed by everyone that there was a problem with the plane that entered the autopilot. 2 F-16 fighter jets, after no response was received from attempts to communicate with the plane, took off to stop the plane.

F-16 Aircraft

F-16 pilots, who arrived near the plane at 11:24, prevent a possible terrorist attack He was ordered to shoot down the plane. But the pilots were shocked by the scene they saw.

There was no one flying the plane. F-16 pilots, who could not see anyone when they looked at the pilot seat, explained the situation on the plane to the center.

Helios Aircraft

Meanwhile, a flight attendant, who was under the influence of pressure, took over the plane, but in a short time the fuel ran out. engine caught fire and the plane drifted towards after the unfortunate. During this drop, due to the pressure difference in the aircraft all the passengers fainted and they were unaware of the doom that would befall them. In other words, passengers feel no pain. was going to die.

Flight attendant Andreas Prodromou, turned the plane in a direction away from the city and managed to prevent possible loss of life. Despite this move, those on board could not escape the tragic end.

Despite all the interventions, the plane, with its 115 passengers and 6 crew, was in the Grammatiko region. fell in the mountain area.

falling plane

There were no survivors from this accident and the events went down in history as one of the most tragic plane crashes of the 21st century. in the accident While 121 people diedA major investigation was launched after the accident.

After this incident, the responsible company Helios Airways became the reason for the arrows of criticism after the incident and soon the company is closed.

So what was the mistake that caused the plane to crash?

Aircraft Maintenance

During the pressure leak on the day of the flight, the on-duty engineer was testing the aircraft so that the engines would not start. pressure system manually. had run. These tests were successful, but the engineer left the aircraft without restoring the system.

Under normal conditions, aircraft pressure systems operate automatically. However, keeping this system in manual mode is beneficial for passengers and flight. great danger it wakes up. So this disaster actually happened because 1 button was not touched.

This situation is also observed by the pilots before the flight. when overlooked The unfortunate end has come true.

Sources: Aviation Safety Network, Wikipedia


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