DEN08LA053

NTSB accident investigation · Phillips Flite Bike · Valley Center, KS · January 26, 2008

Accident · Serious injuriesLimited investigationFinal report
Date
January 26, 2008, 13:30 local (19:30 UTC)
Place
Valley Center, KS
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N31559Phillips Flite Bike
Defining event
Initial climb: Fuel starvation
Weather
Visual (VMC) · Day
Status
Completed · report April 30, 2008
Report
Approved by Office Director
Parties
FAA Flight Standards District Office
FAA report
20080126010339A
Case key
67438

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The pilot's failure to maintain airspeed during an emergency descent resulting in an inadvertent stall/mush. Contributing to the accident was the pilot's failure to turn on the fuel tank valve resulting in fuel starvation and the loss of engine power.

Findings · 4

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Fluids: fuelAircraft › Fluids/misc hardware · Fluid levelPhillips Kenneth G FLITE BIKE: 1 caseAll aircraft: 1,695 casesProbable cause
Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedPhillips Kenneth G FLITE BIKE: 1 caseAll aircraft: 1,681 casesProbable cause
Fuel system: fuel selector/shutoff valveAircraft › Aircraft systems · Incorrect use/operationPhillips Kenneth G FLITE BIKE: 1 caseAll aircraft: 176 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

According to the pilot the airplane preflight and engine start were normal. He shut the engine down and turned the left fuel tank valve to the off position while he was waiting for a flight partner. He stated that he became distracted once his flight partner had arrived, as he was having difficulties with his engine. Shortly thereafter, he restarted his engine and departed for his local flight. After the departure, the engine lost power. He stated that he lowered the nose to achieve "maximum" airspeed and maneuvered the airplane to avoid several trees. He "could feel the airplane sinking and stalling" and did not have enough "altitude, time, and airspeed to recover." The airplane was substantially damaged. An examination of the airplane systems conducted by the FAA revealed no anomalies. The fuel valve was in the off position. The pilot reported that he "failed to turn on the left fuel tank valve." He stated that he had 7 minutes of fuel in the header tank; just enough to start the engine, taxi, and takeoff.

Factual narrative

On January 26, 2008, approximately 1330 central standard time, a Phillips Flite Bike, N31559, piloted by a private pilot, was substantially damaged when it impacted terrain during a forced landing near Harrison Airport (private strip), Valley Center, Kansas. Visual meteorological conditions prevailed at the time of the accident. The personal flight was being conducted under the provisions of Title 14 Code of Federal Regulations Part 91 without a flight plan. The pilot sustained serious injuries. The local flight was originating at the time of the accident.

According to the accident report form submitted by the pilot, the airplane preflight and engine start were normal. He reported that he was waiting for a "flight partner" to arrive for a local flight. While he was waiting, he shut the engine down and turned the left fuel tank valve to the off position. He stated that he became distracted once his flight partner had arrived, as his flight partner was having difficulties with his engine. Shortly thereafter, the pilot restarted his engine and he departed for his local flight. After the departure, the engine lost power. He stated that he lowered the nose to achieve "maximum" airspeed and maneuvered the airplane to avoid several trees. He "could feel the airplane sinking and stalling" and did not have enough "altitude, time, and airspeed to recover." The left wing impacted the ground followed by the nose of the airplane. Both wings were crushed aft and wrinkled. The empennage separated partially and was bent to the right.

An examination of the airplane systems conducted by an airworthiness inspector with the Wichita Federal Aviation Administration revealed no anomalies. The inspector noted that the fuel valve was in the off position. The pilot reported that he "failed to turn on the left fuel tank valve." He stated that he had 7 minutes of fuel in the header tank; just enough to start the engine, taxi, and takeoff.

Aircraft

Registration
N31559
Reported as
Phillips Flite Bike
Category
Airplane, amateur-built
Serial number
0001
Airframe hours
79
Engine
Rotax 503, 50 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · January 1, 2008
Departed
Valley Center, KS
Destination
Valley Center, KS
Airport
Harrison/Redbird Airfield

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
67
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
June 1, 2007
Seat
Single
Flight hours
741 total · 79 in this make and model · 12 in the last 90 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
310° at 10 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
55 °F, dew point 16 °F
Altimeter
30.12 inHg
Observed at
AAO

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.