NTSB Identification: SEA03LA001.
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Accident occurred Saturday, October 05, 2002 in Tillamook, OR
Probable Cause Approval Date: 06/25/2003
Aircraft: Curtiss-Wright Travel Air 4000, registration: N4949
Injuries: 3 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The pilot preflighted the 1928 Curtiss Wright Travel Air 4000 and departed with two passengers on a short, local sightseeing flight. Upon landing the aircraft veered left off the runway nosing over and coming to rest inverted in the grass. Post crash examination revealed that the original weld between the left-right main wheel axle and the left wheel "V" strut had fractured allowing the left strut and wheel axel to separate and the left wheel to subsequently collapse/shift during the landing roll. Although company personnel on the ground observed the aircraft prior to landing and noted the left main gear "hanging down" they were unable to contact the pilot by radio and the pilot's view of the main wheels was obstructed in flight.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

The fracture of the weld joining the left main wheel strut to the left/right main wheel axel resulting in separation of the strut from the axle during an unknown phase of operation which ultimately lead to the left gear collapse and subsequent nose-over on landing roll.

Full narrative available

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