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Taxiing on the river goes awry

By NTSB · July 19, 2016 ·

While practicing step taxiing in a Searey on a river near Mount Vernon, Wash., the pilot under instruction attempted to transition from step taxi to plow taxi.

During the transition, the right wing dropped and hit the water, which damaged the right sponson.

The flight instructor added power and proceeded to takeoff.

The airplane climbed to 10 feet above the water when it then started a slow uncontrollable turn to the right. The airplane lost altitude and hit the water.

Both pilots were able able to get out of the seaplane and were unhurt.

The airplane’s hull/fuselage was substantially damaged and it took on water.

The NTSB determined the probable cause as the pilot’s failure to maintain lateral control while taxiing. Contributing to the accident was the incorrect decision to takeoff once the sponson had been damaged.

NTSB Identification: WPR14CA306

This July 2014 accident report is provided by the National Transportation Safety Board. Published as an educational tool, it is intended to help pilots learn from the misfortunes of others.

About NTSB

The National Transportation Safety Board is an independent federal agency charged by Congress with investigating every civil aviation accident in the United States and significant events in the other modes of transportation, including railroad, transit, highway, marine, pipeline, and commercial space. It determines the probable causes of accidents and issues safety recommendations aimed at preventing future occurrences.

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Comments

  1. CJ says

    July 25, 2016 at 4:36 pm

    Maybe the instructor didn’t notice the damage to the wing/sponson, but should have been aware to abort any takeoff anyway until an inspection was completed. High thrust lines are also a cause for prudence.
    An old instructor I had told me that, “takeoffs are optional and landing are mandatory,” taken from the pilot/instructor standpoint.

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