The chances of a catastrophic event happening after a plane parks are nearly nonexistent, which is why the incident aboard China Airlines Flight 120 was so baffling to investigators. The plane's engines were switched off. The passengers were lining up to debark. Then within seconds, the aircraft was engulfed in flames. What caused the sudden inferno that sent panicked passengers scrambling for their lives? Discover the tiny failure that endangered not only this flight and its passengers, but air travelers around the world.

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