Helios Airways Flight 522 claimed all 121 lives on board after the plane plummeted into mountainous terrain close to Grammatiko, Greece, in August 2005 following a pressurisation change error that left passengers and crew unconscious
Flight attendant Andreas Prodromou tried to avoid wasting the airplane (Picture: Wikipedia)
Some of the eerie and peculiar airplane crashes in aviation historical past, often known as the “Greek Ghost Flight”, claimed all 121 lives on board and stays shrouded in thriller.
Helios Airways Flight 522 crashed into mountainous terrain close to Grammatiko, Greece after passengers and crew misplaced consciousness early into the flight.
Tragically, specialists uncovered a terrifying error that led to the deadly catastrophe, leading to a British-born Helios engineer being erroneously convicted of manslaughter. Alan Irvin was later exonerated of his costs and his fame was reinstated.
Aviation knowledgeable David Lermount, who has analysed air disasters for over 4 a long time, stated: “It was an appalling choice, as a result of in the long run, It is one of many checks the pilots ought to have carried out.”
David, a consulting editor at Flightglobal journal, added: “The entire aviation system, relies on the concept one single slip shouldn’t trigger a catastrophe, as a result of there are an entire load of people that test these items and if they do not, the entire system fails. I feel it was sheer carelessness from the pilots. And it led to essentially the most freakiest air accidents I can ever keep in mind.”, reviews the Day by day Report.
Twenty years in the past, on Thursday 14 August 2005 at 9.07am, Flight 522 departed from Larnaca Airport heading for Athens.
The deliberate journey was one hour and 45 minutes, but greater than two hours after take-off the plane was nonetheless airborne – quickly depleting its gas reserves.
Firemen extinguish the hearth burning close to the tail fin (Picture: AFP/GETTY IMAGES)
Helios was a finances constitution airline offering economical flights to Greece. It was the peak of summer season and the plane was brimming with households.
Flight 522 was commanded by Hans-Jürgen Merten, a German contract pilot employed by Helios for the busy vacation season. His co-pilot, Pampos Charalambous from Cyprus, had been solely employed by Helios for the previous 5 years.
The departure proceeded as deliberate however minutes after takeoff, whereas the plane was nonetheless climbing to its cruising altitude, an alarm rang within the cockpit. The takeoff configuration warning sometimes solely triggers on the bottom.
The captain reached out to the Helios Operations Centre at Larnaca airport in Cyprus regarding the takeoff configuration alarm after which one other alert – the Grasp Warning alarm, indicating the system was overheating – sounded whereas he was conversing with engineer Alan Irwin.
Concurrently, oxygen masks dropped for shocked passengers – unbeknownst to the pilots who had been making an attempt to establish the problem with floor management.
Because the crew did not suppose they had been coping with cabin strain issues, they targeted on the plane’s cooling programs.
Irwin, then 44, was recorded asking the captain to substantiate that the pressurisation panel was set to auto. The captain didn’t reply.
Helios airways Boeing 737 airplane (Picture: AFP)
It’s speculated he might have been struggling the results of hypoxia, however had he answered Irvin’s query, the error would have been detected and catastrophe averted.
As a substitute, the captain left his seat to search for the plane’s cooling circuit breakers – making an attempt to deal with what he erroneously believed was an overheating subject.
Inside moments, radio contact with the pilots was misplaced. Fears escalated that the airplane had been commandeered.
The Greek Air Power dispatched fighter jets to examine the Helios plane.
They had been surprised to search out no hint of the captain and found the co-pilot slumped in his seat. There was no exercise from the passengers, however then one of many jet pilots noticed a determine coming into the cockpit and occupying the captain’s seat.
Instantly, the plane executed a pointy left flip and began dropping altitude swiftly. Simply after noon, almost three hours after leaving the island, Helios Flight 522 crashed into the bottom.
The chief coroner visited the crash website the place items of the plane had been strewn amongst the burnt stays of victims and later characterised it as “the worst expertise of his life”.
A lot of the our bodies had been incinerated past identification, however autopsies revealed they had been all alive however unconscious in the intervening time of affect.
This included the captain who investigators suspect collapsed on account of lack of oxygen – after exiting his seat. Investigators discovered extra tissue samples within the cockpit particles, which had been recognized as belonging to Helios flight attendant Andreas Prodromou. Andreas held a industrial pilot’s licence and aimed to change into a captain with Helios.
He was the individual the fighter jet pilot had noticed sitting within the captain’s seat.
Nevertheless, no diploma of coaching may have allowed him to land the plane safely. The airplane banked left as a result of moments after they noticed Andreas coming into the cockpit, the left engine had run out of gas.
The cockpit voice recorder was recovered and Andreas could possibly be heard breathlessly calling Mayday – but this was by no means acquired by anybody on the bottom – most likely as a result of the radio remained tuned to Larnaca, the Cypriot airport from which the flight had taken off.
Every passenger had ample oxygen for 12 minutes at excessive altitudes. Throughout this era, pilots are in a position to deliver the plane all the way down to a decrease altitude. However Helios 522 had no one on the controls.
Firemen carry a physique lined in a sheet (Picture: AFP)
Oxygen masks do not activate mechanically within the cockpit. Because of this, the pilots fell sufferer to hypoxia earlier than the passengers. The autopilot would have put the jet in a holding sample – with no one flying the plane.
There have been 4 moveable oxygen cylinders on board the 737, every able to lasting an hour. All 4 cylinders had been discovered on the crash website and three appeared to have been used.
That is how investigators imagine Andreas survived the hypoxia lengthy sufficient to aim flying the airplane. As autopsy examinations confirmed, everybody on board besides Andreas had misplaced consciousness. Though they possessed a heartbeat on the level of affect, they had been virtually definitely in an irreversible coma ensuing from oxygen hunger to the mind.
The trigger was tragically attributed to a single flick of a change. Crash investigators found the pressurisation selector change had been left in “handbook” fairly than “auto” following a pre-flight security inspection.
This was attributed to human error and British-born Alan Irwin, the engineer who had performed the test, was thought-about largely accountable.
The ultimate investigation decided he didn’t return the change to its right place after his inspection. The ultimate report additionally criticised the pilots who had failed to identify the error.
Firemen carry stretchers by the particles (Picture: AFP/GETTY IMAGES)
Boeing, the plane producer, issued a press release through the crash inquiry: “Helios’s floor engineers didn’t comply with Boeing’s right process.
Not less than 16 separate errors had been made by the bottom employees, the flight deck crew and the passenger cabin crew. If any one in all these errors had not been made, the accident wouldn’t have occurred.”
The accident investigation report, revealed in 2006, established that the crash had three direct causes: the change being in handbook; the failure to establish the cabin warning; and the crew being incapacitated by hypoxia.
Aviation security knowledgeable David Learmount added: “Many issues performed an element within the crash however finally by doing their checks correctly, the pilots may have and may have prevented this accident.”
In 2007, family of eight Cypriots who died within the catastrophe pursued €76m (£69m) in compensation from Boeing, for having “the identical alarm in place for 2 several types of dysfunction”, their solicitor, Constantinos Drougas, defined. The case was settled out of court docket and the households acquired an undisclosed sum.
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Irwin, together with different Helios workers, confronted manslaughter costs, was convicted, and handed a 10-year jail sentence whereas remaining at liberty on bail pending an enchantment.
By 2013, Irwin succeeded in his enchantment. The opposite defendants had been unsuccessful of their bids to overturn their convictions.
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