CHI94DCJ02

NTSB accident investigation · Mueller Q2 · Utica, NE · June 25, 1994

Accident · Minor injuriesFinal report
Date
June 25, 1994, 13:00 local (18:00 UTC)
Place
Utica, NE
Injuries
1 minor
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N524WMMueller Q2
Weather
Visual (VMC) · Day
Status
Completed · report November 14, 1994
Report
Approved by Office Director
FAA report
19940625016799A
Case key
9339

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 failure of the carburetor float valve. A related factor is the high vegetation at the landing site.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine power(partial) - mech failure/malfCruise
Fuel system,carburetor - failure,totalCause
Fluid,fuel - starvation
Forced landingDescent - emergency
Nose overLanding - roll
Terrain condition - high vegetationFactor

Analysis

The pilot/airplane builder stated the homebuilt airplane was in cruise flight at 3,000 feet MSL when the engine '...went to idle...' And he was unable to restore power. The pilot reported he set the airplane up for its 'best glide' airspeed and selected a field for a forced landing. The pilot stated the fields within range were corn fields, so he picked one with the rows going into the wind, and landed. The pilot reported the airplane touched down the 4 foot high corn and soft dirt, and flipped over, coming to rest upside down. Postaccident investigation revealed the carburetor float valve stuck in the closed position.

Factual narrative

On June 25, 1994, at 1300 central daylight time, a Mueller Q2, N524WM, piloted by the owner/builder, experienced a loss of engine power during cruise flight in the vicinity of Utica, Nebraska. The homebuilt airplane was destroyed when it nosed over during the subsequent forced landing. The private pilot received serious injuries. Visual meteorological conditions prevailed for the flight, no flight plan was filed. The flight operated under 14 CFR Part 91, and originated from York, Nebraska, approximately 1245.

The pilot stated the airplane was in cruise flight at 3,000 feet Mean Sea Level (MSL) when "...my engine went to idle and I could do nothing to get power back." He reported he set the airplane up for its best glide and looked for a field for the forced landing. The pilot reported all the fields were corn fields. He selected a corn field with the rows aligned into the wind, and set up to land. The pilot stated: "I had a controlled approach but as the plane touched down the 4 foot high corn and soft dirt flipped the aircraft over and it landed on its canopy."

Postaccident investigation revealed the carburetor float needle valve was stuck in the closed position. The valve seat stuck repeatedly during postaccident examination (see Inspector Statement.) The pilot reported the carburetor total time was 23.4 hours. The most recent inspection was an Annual Inspection which was dated August 29, 1993. The carburetor had 7.6 hours since the Annual Inspection. The pilot stated he "...could have cleaned carburetor after sitting for the winter...this may have prevented the accident."

Aircraft

Registration
N524WM
Reported as
Mueller Q2
Category
Airplane, amateur-built
Serial number
2758
Airframe hours
23
Engine
Hapi 82 2DEH, 82 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Operator
William C. Mueller
Registered owner
William C. Mueller
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · August 29, 1993 · 8 hours before
Departed
JYR · York, NE
Destination
LNK · Lincoln, NE

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
40
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
130 total · 7 in this make and model · 87 as pilot in command · 4 in the last 90 days · 2 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
100° at 8 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
90 °F, dew point 70 °F
Altimeter
29.00 inHg
Observed at
LNK, 4 nm away

FAA reports on this event · 1

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