WPR11CA088

NTSB accident investigation · Ferkin Kitfox IV · Homedale, ID · January 4, 2011

Accident · No injuriesData collectionFinal report
Date
January 4, 2011, 16:45 local (23:45 UTC)
Place
Homedale, ID
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N90TYFerkin Kitfox IV
Defining event
Takeoff: Nose over/nose down
Weather
Visual (VMC) · Day
Status
Completed · report May 26, 2011
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20110104000029A
Case key
78115

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 inadequate compensation for the snow-covered terrain during the takeoff ground roll, which resulted in a nose-over.

Findings · 3

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.

Runway/land/takeoff/taxi surface: snow/slush/ice covered surfaceEnvironmental issues › Physical environment · Response/compensationRhoades Larry W KITFOX IV: 1 caseAll aircraft: 219 casesProbable cause
Personnel issuesPersonnel issues › Task performance · PilotRhoades Larry W KITFOX IV: 1 caseAll aircraft: 137 casesProbable cause
Performance/control parametersAircraft › Aircraft oper/perf/capability · Incorrect use/operationRhoades Larry W KITFOX IV: 1 caseAll aircraft: 1,269 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

Approximately 15 minutes into the flight, the oil pressure gauge indicated no oil pressure. The pilot performed a precautionary landing on a snow-covered hill. He examined the airplane and discovered that the sending wire had disconnected from the oil pressure gauge. He plugged it in and the oil pressure gauge functioned properly. He estimated that the snow cover was 4 inches deep. During the takeoff roll, he raised the tailwheel and the airplane nosed over. The pilot stated that he should have used soft-field takeoff techniques due to the snow-covered terrain.

Factual narrative

The pilot submitted a written statement. Approximately 15 minutes into the flight, the oil pressure gauge showed no oil pressure. The pilot performed a precautionary landing on a snow-covered hill. He examined the airplane and discovered that the sending wire had disconnected from the oil pressure gauge. He plugged it in and the oil pressure gauge functioned properly. He estimated that the snow cover was 4 inches deep. During the takeoff roll, he raised the tailwheel. The airplane then nosed-over. The pilot stated that he should have used soft-field takeoff techniques due to the snow-covered terrain.

Aircraft

Registration
N90TY
Reported as
Ferkin Kitfox IV
Category
Airplane, amateur-built
Serial number
1510
Airframe hours
61
Engine
Rotax 912ULS, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Ty Ferkin
Registered owner
Mark Ferkin
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · September 30, 2010
Departed
S66 · Homedale, ID
Destination
28U · Owyhee, OR

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
20
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 2, Without waivers/limitations
Last flight review
September 23, 2009
Seat
Left
Flight hours
325 total · 20 in this make and model · 305 as pilot in command · 16 in the last 90 days · 6 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
330° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
30 °F, dew point 14 °F
Altimeter
30.42 inHg
Observed at
EUL, 13 nm away

Docket · 1

The files NTSB released with the investigation on January 21, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 346 KB in all.

FAA reports on this event · 1

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

Other investigations on N90TY · 1

Matched to the same aircraft by N-number and date.