The Mysterious Crash of Helios Flight 522

💥Helios Flight 522 crashes in Athens after losing cabin pressurization. Investigation reveals a manual setting error.

😨Passengers and crew succumb to hypoxia as oxygen masks supply limited oxygen. Flight attendant, Andreas Promu, may have used portable oxygen to remain conscious.

🔍Investigation finds that the flight crew failed to notice the manual setting error during pre-flight preparations.

🚀The plane's autopilot system maintains the flight path to Athens and puts the aircraft in a holding pattern before crashing.

🌩️The master caution alarm is misinterpreted as an overheating alarm, leading to confusion in the cockpit.

What caused Helios Flight 522 to crash?

—The crash was caused by the loss of cabin pressurization due to a manual setting error.

Why did the flight crew fail to notice the manual setting error?

—The flight crew may have been confused by the misinterpreted master caution alarm.

How did Andreas Promu remain conscious during the flight?

—Promu may have used portable oxygen to survive after the passenger oxygen system stopped working.

What happened to the passengers and crew after losing cabin pressurization?

—They succumbed to hypoxia and lost consciousness.

What did the investigation reveal about the accident?

—The investigation revealed the cause of the accident and the tragic consequences of the manual setting error.

00:01Introduction to the crash of Helios Flight 522.

08:04The plane takes off from Cyprus.

10:24Flight attendants advise passengers to put on oxygen masks.

13:10Problems with pressurization discovered.

15:25The plane runs out of fuel and crashes.

16:12Investigation of the crash begins.

12:59The crew misinterprets the alarms in the cockpit.

16:25Discovery of the manual setting error.