The rapid spread of electrical power failures led to the breakdown of key avionics systems, and the crew was soon rendered unable to control the aircraft. The pilot-in-command was forced to fly manually because he had no light by which to see his controls after the instrument lighting failed. The fuel-laden plane was above maximum landing weight; as the flight crew dumped fuel as per procedure, they lost all control, and the doomed plane flew into the ocean uncommanded. Recovered fragments of the plane show that the heat inside the cockpit became so great that aluminium parts in the flight deck ceiling had melted. The recovered standby attitude indicator and airspeed indicators showed that the aircraft struck the water at in a 20 degrees nose down and