CEN13LA254

NTSB accident investigation · Mason Robert Kolb Mark 3X · Lawrence, KS · May 1, 2013

Accident · Serious injuriesLimited investigationFinal report
Date
May 1, 2013, 12:40 local (17:40 UTC)
Place
Lawrence, KS
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N125KPMason Robert Kolb Mark 3X
Defining event
Initial climb: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report September 30, 2014
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA
FAA report
20130501016309A
Case key
86800

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 noncertificated pilot’s improper decision to depart with a tailwind.

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.

Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedMason Robert KOLB MARK 3X: 1 caseAll aircraft: 1,310 casesProbable cause
Wind: tailwindEnvironmental issues › Conditions/weather/phenomena · Effect on operationMason Robert KOLB MARK 3X: 1 caseAll aircraft: 594 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 noncertificated pilot departed to the south in a light sport airplane from a soft dirt field. A witness heard the airplane's engine and saw the airplane make a slight right turn before it impacted a fence and trees at the end of the field. A postimpact examination of the aircraft and engine did not reveal any anomalies that would have prevented normal operation. Wind conditions reported 6 miles from the accident site were from 060 degrees at 10 knots gusting to 14 knots; thus the airplane was likely subject to a tailwind during the departure.

Factual narrative

On May 1, 2013, about 1240 central daylight time, a Robert Mason Kolb Mark 3X airplane, N125KP, collided with trees and a fence after departing from a private airstrip in Lawrence, Kansas. The non-certificated pilot received serious injuries. The airplane was owned and operated by a private individual; however, the airplane was still registered to the previous owner. The airplane was being operated as a 14 Code of Federal Regulations Part 91 personal flight. Visual meteorological conditions prevailed for the local flight and no flight plan was filed. The local flight was originating at the time of the accident. The pilot's wife witnessed the accident. She stated she first saw the airplane on the ground with the engine running; the flight controls moved and the engine revved up and down. The power increased again and the airplane began to move. The tail of the airplane lifted off and the airplane veered slightly in one direction, straightened out, and the power increased. The airplane lifted off the ground and made a slight turn to the right before it impacted the trees and a fence at the southwest corner of their property. The pilot initially stated that the engine lost power on takeoff. The pilot then stated to a Federal Aviation Administration Inspector that he did not remember what happened. A visual examination of the aircraft and engine did not reveal any anomalies that would have prevented normal operation. The fence and trees were about 900 feet from the beginning of the airstrip. The pilot departed to the south on a flat area of runway that was 300 foot long topped with freshly seeded dirt. The weather conditions recorded at the Lawrence Municipal Airport (LWC), Lawrence, Kansas, located 6 miles north of the accident site, at 1252, were: wind from 060 degrees at 10 knots gusting to 14 knots, visibility 8 miles, sky condition 4,000 feet scattered, temperature 26 degrees Celsius, dew point 16 degrees Celsius, and altimeter 29.98 inches of mercury. A review of records revealed that the pilot did not hold a pilot certificate. The pilot stated he purchased the already built airplane a couple of months prior to the accident and had flown it 2 or 3 hours. He stated he has flown for about 40 years and that he had about 40 hours of helicopter flight time. The airplane was issued a Special Experimental Light Sport Airworthiness certificate on October 18, 2006. The airplane was powered by a Rotax 582 reciprocating engine.

Aircraft

Registration
N125KP
Reported as
Mason Robert Kolb Mark 3X
Category
Airplane
Serial number
M3X0340049
Engine
Rotax 582DCDI-99, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Dennis R. McNish
Registered owner
Holle Kenneth D
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · August 1, 2012
Departed
Pvt · Lawrence, KS
Destination
Pvt · Lawrence, KS
Airport
Pvt · Pvt, runway 18, 300 × 50 ft, dirt

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
60
Injuries
Serious
Seat
Right
Flight hours
3 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
60° at 10 knots, gusting 14
Visibility
8 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 61 °F
Altimeter
29.97 inHg
Observed at
LWC, 6 nm away

Docket · 7

The files NTSB released with the investigation on August 28, 2014, on NTSB’s docket system: statements, records, photos and specialists’ reports. 11.1 MB 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.