CEN19LA172

NTSB accident investigation · Karns SKY Ranger · Hedgesville, WV · June 14, 2019

Accident · Minor injuriesClass 3 · LimitedFinal report
Date
June 14, 2019, 18:55 local (22:55 UTC)
Place
Hedgesville, WV
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N106RKKarns SKY Ranger
Defining event
Initial climb: Loss of engine power (partial)
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Central Region
Parties
Federal Aviation Administration; Baltimore FSDO
FAA report
20190614006969A
Case key
99649

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

On this page

Probable cause

A partial loss of engine power during takeoff due to the formation of carburetor ice while on the ground, which resulted in an impact with terrain.

Findings · 1

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.

Temp/humidity/pressure: conducive to carburetor icingEnvironmental issues › Conditions/weather/phenomena · Effect on equipmentKarns Eric W SKY RANGER: 1 caseAll aircraft: 435 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 and passenger had just departed for a local flight. After takeoff, when the airplane was about 100-150 ft above ground level, the pilot felt a loss of engine power and the engine speed decreased to about 3,000 rpm. About 3 seconds later, the engine speed decreased to about 2,300 rpm. The pilot said that he was unable to land on the remaining runway and there were power lines near the departure end of the runway, so he performed a turn back toward the departure runway. According to the pilot, the airplane descended and impacted terrain and sustained substantial damage. Postaccident examination of the airplane revealed no mechanical malfunctions or failures that would have precluded normal operation. According to a carburetor icing chart, the weather conditions were conducive for serious carburetor icing at glide power, about the time of the accident, which would have allowed for carbuerator ice to build up while at reduced power on the ground. The circumstances of the accident are consistent with a loss of engine power due to carburetor icing.

Factual narrative

On June 14, 2019, at 1855 eastern daylight time, an experimental light sport Karns Sky Ranger, N106RK, was substantially damaged when it was in an accident at Green Landings Private Residential Airpark (WV22) near Hedgesville, West Virginia. The noncertificated pilot and a passenger received minor injuries. The airplane was registered to a private individual and operated by the pilot under Title 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed at the time of the accident. The flight was originating at the time of the accident. The pilot stated that on his way to the airport, he stopped at a gas station and purchased 5 gallons of 93 octane gasoline for the airplane. The fuel tanks were already about ¼ full of fuel or about 5-6 gallons. The airplane had about 10 gallons of fuel for the flight after the pilot added the fuel that he had purchased. The pilot stated during the takeoff, he moved the throttle control to full power and the engine speed was 5,000 rpm. About 100-150 ft above ground level after takeoff, he felt a loss of engine power and the engine speed decreased to about 3,000 rpm. About 3 seconds later, the engine speed decreased to about 2,300 rpm. He said that he was unable to land on the remaining runway and there were powerlines near the departure end of the runway, so he performed a turn back to the departure runway. He said the airplane was descending due to the loss of engine power and an aerodynamic stall. He then pulled the control yoke because he did not have sight of anything in front of him. The last thing he remembered was hitting an unknown obstacle and passing out. The Federal Aviation Administration (FAA) inspector that responded to the accident stated that he asked the pilot if he had sumped the fuel tank prior to the accident flight. The pilot said he never sumped the fuel tank and did not know about sumping the fuel tank. Post-accident examination of the airplane by the FAA inspector revealed no mechanical anomalies that would have precluded a loss of engine power. The Eastern WV Regional Airport/Shepherd Field (MRB), Martinsburg, West Virginia, automated surface observing system, located about 10 miles south of WV22, recorded a temperature and dew point of 73 degrees F and 45 degrees F, respectively. According to a carburetor icing chart, there was a probability for serious carburetor icing present about the time of the accident.

Aircraft

Registration
N106RK
Reported as
Karns SKY Ranger
Category
Airplane, amateur-built
Serial number
SKR0210260
Built
2002
Airframe hours
328
Engine
Rotax 912S, 80 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Roxand Cruz
Registered owner
Roxand Cruz
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · January 19, 2019
Departed
WV22 · Hedgesville, WV
Destination
WV22 · Hedgesville, WV
Airport
WV22 · Green Landings Private Residen, runway 21, 2,600 × 100 ft, grass/turf

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
35
Injuries
Serious
Seat
Left
Restraint
3-point
Flight hours
330 total · 330 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
310° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 45 °F
Altimeter
30.06 inHg
Observed at
MRB, 10 nm away

Docket · 4

The files NTSB released with the investigation on June 8, 2020, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.5 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.