CEN17LA327

NTSB accident investigation · Greene R/Greene S Rans S 17 · Erie, CO · August 22, 2017

Accident · Minor injuriesLimited investigationFinal report
Date
August 21, 2017, 18:45 local (Aug 22, 2017, 00:45 UTC)
Place
Erie, CO
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N117BEGreene R/Greene S Rans S 17
Defining event
Takeoff-rejected takeoff: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report March 18, 2019
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA FSDO
FAA report
20170821015859A
Case key
95878

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

The pilot's failure to maintain control following a rejected takeoff for a perceived loss of engine power. Contributing to the accident was the pilot's lack of training and experience in the airplane.

Findings · 6

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.

Wind: tailwindEnvironmental issues › Conditions/weather/phenomena · Effect on operationGreene R/Greene S RANS S-17: 1 caseAll aircraft: 594 casesProbable cause
Temp/humidity/pressure: high density altitudeEnvironmental issues › Conditions/weather/phenomena · Effect on operationGreene R/Greene S RANS S-17: 1 caseAll aircraft: 278 casesProbable cause
Training: training with equipmentPersonnel issues › Experience/knowledge · PilotGreene R/Greene S RANS S-17: 1 caseAll aircraft: 32 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 of the experimental amateur-built airplane reported that, during the initial climb, the engine did not seem to be producing full power, so he attempted to reject the takeoff and land back on the runway. During the landing, the wind pushed the airplane to the right, the left wing rose, and the right wing contacted the ground. The airplane spun around and came to rest upright. The pilot had not flown since 2010 and had no more than 2 hours of recent flight experience. The pilot stated that he had checked the spark plugs before the accident flight and thought that he did not properly install the plugs; however, following the accident, the pilot ran the engine several times and the engine appeared to produce power. The wind conditions at the time of the accident would have resulted in a left quartering tailwind during landing. This, coupled with the density altitude of about 7,300 ft, would have significantly decreased the airplane's performance and could have given the perception to the noncertificated, inexperienced pilot that the engine had experienced a partial loss of power.

Factual narrative

On August 21, 2017, about 1845 mountain daylight time, a Rans S-17 airplane, N117BE, ground looped at the Erie Municipal Airport (KEIK), Erie, Colorado. The uncertificated pilot sustained minor injuries and the airplane was substantially damaged. The airplane was registered to and operated by the pilot under the provisions of 14 Code of Federals Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed for the flight, which operated without a flight plan. The local flight was originating at the time of the accident.According to information provided by the pilot, after departing on runway 15, during the initial climb, the engine did not seem to be producing full power. The pilot reduced engine power, attempted to reject the takeoff, and land back on the runway. Wind pushed the airplane to the right, the left wing rose, and the right wing contacted the ground. The airplane spun around on the ground and came to rest upright. Substantial damage was sustained to the fuselage and right wing. Information, gathered by the responding Federal Aviation Administration Inspector, revealed that the pilot did not possess a pilot certificate. In addition, the pilot had not flown since 2010, and had no more than 2 hours of recent flight experience. The pilot stated that he had checked the spark plugs before the accident flight. He felt that he did not properly install the plugs. Following the accident, the pilot ran the engine several times and the engine appeared to produce power. A review of meteorological data revealed that the density altitude at the time of the accident was about 7,300 ft. At the accident time, the automated weather reporting facility at KEIK reported a wind from 040° at 3 knots. The wind would have been a left quartering tailwind.

Aircraft

Registration
N117BE
Reported as
Greene R/Greene S Rans S 17 (NO SERIES)
Category
Airplane
Serial number
1202040
Engine
Rotax 447, 416 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Departed
EIK · Erie, CO
Destination
EIK · Erie, CO
Airport
EIK · Erie Muni, runway 15, 4,700 × 60 ft, concrete

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
80
Injuries
Minor
Seat
Single
Flight hours
2 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
40° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 37 °F
Altimeter
30.21 inHg
Observed at
KEIK

Docket · 3

The files NTSB released with the investigation on April 11, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 820 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.