United Airlines Flight 266 - Probable Cause

Probable Cause

The Board determines that the probable cause of this accident was loss of attitude orientation during a night, instrument departure in which the attitude instruments were disabled by loss of electrical power. The Board has been unable to determine (a) why all generator power was lost or (b) why the standby electrical power system either was not activated failed to function.


On January 13, 1969, just five days before the crash of United Flight 266, a Scandinavian Airlines DC-8 on final approach to Los Angeles International also crashed into Santa Monica Bay. The jet broke in half on impact, killing 15. Thirty people survived in a portion of the fuselage that remained afloat.

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