CEN11CA590

NTSB accident investigation · Rans Designs S-7LS · Joplin, MO · August 21, 2011

Accident · No injuriesData collectionFinal report
Date
August 21, 2011, 16:10 local (21:10 UTC)
Place
Joplin, MO
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N544RSRans Designs S-7LS
Defining event
Landing: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report October 17, 2011
Report
Approved by Office Director
NTSB office
Central Region
Parties
Federal Aviation Administration
FAA report
20110821020749A
Case key
81580

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 failure to maintain aircraft control during the landing.

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.

Performance/control parametersAircraft › Aircraft oper/perf/capability · Not attained/maintainedRans Designs S-7LS: 1 caseAll aircraft: 1,269 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotRans Designs S-7LS: 1 caseAll aircraft: 9,295 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

According to the pilot, during the landing, a gust of wind pushed the airplane to the right of runway centerline. The pilot applied rudder and aileron inputs to counter the unexpected wind. Subsequently, the airplane ground looped and came to rest upright on the runway. A postaccident examination of the airplane revealed the right wing spar was bent. No airframe or engine anomalies were reported by the pilot. The wind conditions at the airport were light and variable at the time of the accident.

Factual narrative

According to the pilot, during the landing, a gust of wind pushed the airplane to the right of runway centerline. The pilot applied rudder and aileron inputs to counter the unexpected wind. Subsequently, the airplane ground looped and came to rest upright on the runway. A postaccident examination of the airplane revealed the right wing spar was bent. No airframe or engine anomalies were reported by the pilot. The wind conditions at the airport were light and variable at the time of the accident.

Aircraft

Registration
N544RS
Reported as
Rans Designs S-7LS
Category
Airplane
Serial number
0907482
Airframe hours
496
Engine
Rotax 912ULS, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Special light-sport (Special)
Last inspection
Annual · July 10, 2011
Departed
JLN · Joplin, MO
Destination
JLN · Joplin, MO
Airport
JLN · Joplin Regional Airport, runway 13, 6,502 × 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
71
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
March 10, 2011
Seat
Front
Flight hours
97 total · 20 in this make and model · 29 as pilot in command · 9 in the last 90 days · 4 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None
Temperature
90 °F, dew point 66 °F
Altimeter
30.02 inHg
Observed at
JLN

Docket · 1

The files NTSB released with the investigation on September 13, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 354 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.