Loss of Control in Flight · NTSB ERA09LA325

SMITH BRET B SEAREY — Knoxville, TN

2 fatal
DateJune 6, 2009
LocationKnoxville, TN
AircraftSMITH BRET B SEAREY (amateur-built)
Purpose of flightPersonal
ConditionsDay · Visual Meteorological Cond
Phase / occurrenceUncontrolled descent Collision with terr/obj (non-CFIT)
Pilot age40
Pilot total time450 hrs · Building experience
Time in typeUnknown
Fatalities2

Probable cause

The pilot's failure to maintain adequate airspeed, resulting in an aerodynamic stall and uncontrolled descent.

NTSB findings

  • Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
  • Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Airspeed-Not attained/maintained - C

What happened

The pilot was providing rides to passengers in an amateur-built seaplane, and following a previous uneventful local flight with another passenger, the pilot returned, landed, and the accident passenger boarded. The final moments of the accident flight were captured on video by pleasure boaters. The airplane overflew the boat at a low altitude, then entered a steep bank, descended steeply, and impacted the water. Examination of the wreckage revealed no evidence of any preimpact mechanical malfunctions or failures of the engine or flight controls. According to the experimental seaplane’s kit manufacturer, when equipped with a 100 horsepower engine and loaded with 2 occupants, the stall speed in level flight was 40 miles per hour.

An editorial "what led to it / how to avoid it" analysis for this accident is generated separately and will appear here.

View the official NTSB docket →