N31CS Smith STEEN SKYBOLT accident

NTSB ERA15CA272 · 2015-07-18 · Junction City, KY · near DVK

Docket — crew, injuries and powerplant

Summary

The pilot reported that the accident flight was his first flight in the experimental airplane. He planned a fuel stop during his long cross-country flight based on an estimated 12 gallons per hour fuel consumption rate. The pilot further stated that his estimated fuel consumption rate did not account for the fact that the engine had been upgraded from carbureted to fuel injected. During the first leg of the cross-country flight, the airplane was on approach to the planned fuel-stop airport; however, the pilot performed a go-around as the airplane ballooned during flare. During the go-around, about 500 feet above ground level, the engine lost all power and the pilot performed a forced landing to a field. During the landing, the airplane struck an unoccupied house and came to rest on its right side. Examination of the wreckage by a Federal Aviation Administration inspector revealed that the airplane's single fuel tank was not compromised and was absent of fuel. The examination did not reveal any preimpact mechanical malfunctions, nor did the pilot report any. The inspector also noted the right wing and fuselage were substantially damaged.

Full narrative

The pilot reported that the accident flight was his first flight in the experimental airplane. He planned a fuel stop during his long cross-country flight based on an estimated 12 gallons per hour fuel consumption rate. The pilot further stated that his estimated fuel consumption rate did not account for the fact that the engine had been upgraded from carbureted to fuel injected. During the first leg of the cross-country flight, the airplane was on approach to the planned fuel-stop airport; however, the pilot performed a go-around as the airplane ballooned during flare. During the go-around, about 500 feet above ground level, the engine lost all power and the pilot performed a forced landing to a field. During the landing, the airplane struck an unoccupied house and came to rest on its right side. Examination of the wreckage by a Federal Aviation Administration inspector revealed that the airplane's single fuel tank was not compromised and was absent of fuel. The examination did not reveal any preimpact mechanical malfunctions, nor did the pilot report any. The inspector also noted the right wing and fuselage were substantially damaged.

Probable cause

The pilot's inaccurate fuel planning, which resulted in a total loss of engine power due to fuel exhaustion. The National Transportation Safety Board determined the probable cause of this accident.

Circumstances

Event type
Accident
Highest injury
Minor
Weather conditions
Visual Meteorological Cond
Light condition
Day
Ceiling (ft)
0
Visibility (sm)
10
Wind direction
230
Wind speed (kt)
7
Temperature (F)
90
Nearest airport
Stuart Powell Field
Distance from field
1.0
Airport elevation
1022

Aircraft

RegistrationMakeModelDamageFAR part
N31CS SMITH STEEN SKYBOLT SUBS 091

Sequence of events

#OccurrencePhase
1 Approach-VFR go-around Fuel exhaustion defining Cruise
2 Approach-VFR go-around Loss of engine power (total) Cruise
3 Emergency descent Off-field or emergency landing Descent
4 Landing Collision with terr/obj (non-CFIT) Cruise

Findings

Finding
Personnel issues-Task performance-Planning/preparation-Fuel planning-Pilot cause
Aircraft-Fluids/misc hardware-Fluids-Fuel-Not specified cause