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Eagle Harbor ferry workers responsible for damage to Walla Walla
Mistakes made by Washington State Ferries personnel were to blame for the failure of an electric drive motor that knocked the 188-car ferry M/V Walla Walla out of service.
WSF said a three-month safety investigation revealed that "human error" was the cause of the motor failure.
The motor failure happened Nov. 4 when the Walla Walla was undergoing routine annual maintenance at Eagle Harbor Maintenance Facility on Bainbridge Island.
Investigators said the failure was avoidable.
The mistakes of WSF workers included:
Communication between engine crew and maintenance staff was insufficient;
Eagle Harbor maintenance staff and the Walla Walla’s engine crew improperly prepared electrical equipment for a complex maintenance procedure; and
No written procedures or checklists were available for this maintenance work, which is rarely performed on the Jumbo-class Walla Walla.