GRAMMATIKO — 2005 · Major Tragedy

The Crash of Helios Airways Flight 522

ClosedSources: ALast updated: 14 October 2026

On 14 August 2005 a Helios Airways Boeing 737 flying from Larnaca to Prague via Athens crashed into hills near Grammatiko, north of Athens, killing all 121 people on board. The cabin pressurisation system had been left in manual mode after maintenance, and as the aircraft climbed the crew and passengers lost consciousness from hypoxia. The plane flew on autopilot for hours; fighter pilots sent to intercept it saw motionless figures in the cockpit. It crashed when its fuel ran out. In Greece four company officials were convicted, while the case in Cyprus ended in acquittals.

Date
2005
Place
Attica, Greece, Grammatiko, GR
Category
Major Tragedy
Case Status
Closed
Coordinates
38.2300, 23.9700 ↗

Timeline of Events

  1. 14 August 2005The aircraft left Larnaca; cabin pressure failed to build.
  2. 14 August 2005Fighter jets were sent alongside the plane flying on autopilot.
  3. 14 August 2005Out of fuel, it crashed near Grammatiko; 121 people died.
  1. December 2008Five people were charged with manslaughter in Cyprus.
  2. 2012Four Helios officials were convicted in Greece.

Sources

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🕯️ This record was prepared with respect, in memory of those who lost their lives.