LAX08LA145

NTSB accident investigation · Babcock KR-2 · Olympia, WA · May 19, 2008

Accident · No injuriesLimited investigationFinal report
Date
May 18, 2008, 18:45 local (May 19, 2008, 01:45 UTC)
Place
Olympia, WA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N4276YBabcock KR-2
Defining event
Initial climb: Loss of engine power (total)
Weather
Visual (VMC) · Day
Status
Completed · report May 6, 2009
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20080519835459A
Case key
68044

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

A total loss of engine power during takeoff due to the carburetor's mixture needle backing out.

Findings · 2

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.

Power plantAircraft › Aircraft power plant · FailureBabcock James W KR-2: 1 caseAll aircraft: 198 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

The airplane's engine lost power immediately after becoming airborne. The pilot landed straight ahead on the runway, but landed hard due to the lack of time and altitude for a proper flare. The airplane's left wing was structurally damaged, the firewall was wrinkled, the nose landing gear separated, and the two main landing gear were bent outboard. Postaccident examination of the engine by the pilot revealed that the carburetor's mixture needle had backed out, permitting the mixture to become excessively rich and resulting in a loss of power.

Factual narrative

On May 18, 2008, approximately 1845 Pacific daylight time, a Babcock KR-2 experimental homebuilt airplane, N4276Y, sustained substantial damage during a hard landing at Olympia Airport (OLM), Olympia, Washington. The private pilot, the sole occupant, was not injured. The pilot/owner was operating the airplane under the provisions of 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed for the local, personal flight, which was originating at the time of the accident. No flight plan had been filed. The pilot reported that immediately after takeoff, the engine began "running rough." The engine lost power and he landed straight ahead on the remaining runway. The pilot stated that due to the lack of time and altitude he landed hard. The airplane's left wing was structurally damaged, the firewall was wrinkled, the nose landing gear separated, and the two main landing gear were bent outboard. Postaccident examination of the engine by the pilot revealed that the carburetor's mixture needle had backed out permitting the mixture to become excessively rich, resulting in a loss of power.

Aircraft

Registration
N4276Y
Reported as
Babcock KR-2
Category
Airplane, amateur-built
Serial number
1412
Airframe hours
290
Engine
Hapi VW 1835, 60 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
William T. Walsh
Registered owner
William T. Walsh
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · February 14, 2008
Departed
OLM · Olympia, WA
Destination
OLM · Olympia, WA
Airport
OLM · Olympia Airport, runway 26, 4,157 × 150 ft, asphalt

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
36
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Last flight review
October 1, 2007
Seat
Left
Flight hours
444 total · 60 in this make and model · 395 as pilot in command · 20 in the last 90 days · 2 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
210° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
75 °F, dew point 52 °F
Altimeter
29.97 inHg
Observed at
OLM

FAA reports on this event · 1

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