Incident Overview

Date: Wednesday 9 August 1978
Aircraft Type: Boeing 747-284B
Owner/operator: Olympic Airways
Registration Number: SX-OAA
Location: Athens – ÿ Greece
Phase of Flight: Take off
Status: Minor
Casualties: Fatalities: 0 / Occupants: 418
Component Affected: Boeing 747 engine water injection system.Boeing 747 engine water injection system.
Category: Accident
An Olympic 747 experienced a significant engine failure shortly after takeoff, resulting in a rapid and precarious descent. The captain?s misinterpretation of a command led to a loss of thrust and a dramatic reduction in airspeed, ultimately requiring a rapid fuel dump and a successful landing.An Olympic 747 experienced a significant engine failure shortly after takeoff, resulting in a rapid and precarious descent. The captain?s misinterpretation of a command led to a loss of thrust and a dramatic reduction in airspeed, ultimately requiring a rapid fuel dump and a successful landing.

Description

Olympic flight 411 was a regularly scheduled flight from Athens, Greece, to New York, USA. Just after takeoff rotation the Boeing 747, SX-OAA “Olympic Zeus”, suffered an engine failure from the #3 engine. During takeoff and due to a misunderstanding of a captain command, Flight Engineer shut off the water injection from all the engines. Thrust of the remaining engines reduced drastically. The crew were barely able to keep the plane airborne, flying just 200 feet above a densely populated area of Athens. Airspeed was exceptionally slow, the FDR showing as low as 158kts, which was not possible according to Boeing. After almost two minutes flying straight and as low as 153 ft ~ 46 meter~ above ground (tail height from the ground is 19 meter, wingspan is 59 meter), the captain was able to gain some airspeed and finally altitude up to 1,500ft. After quickly dumping fuel over the water, the plane landed safely back at Ellinkon, 30 minutes after takeoff. It was discovered that the engine’s water injection system was mistakenly turned off prior during takeoff, causing the engine to overheat and explode during rotation.

Source of Information

https://en.wikipedia.org/wiki/Olympic_Airways_Flight_411, https://www.youtube.com/watch?v=f9YzsO_ZPGIhttps://en.wikipedia.org/wiki/Olympic_Airways_Flight_411, https://www.youtube.com/watch?v=f9YzsO_ZPGI

Primary Cause

Misunderstanding of Captain?s command regarding water injection during takeoff.Misunderstanding of Captain?s command regarding water injection during takeoff.

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