CHI03LA013

NTSB accident investigation · Wondrasek Rans S-10 Sakota · Missouri Valley, IA · October 18, 2002

Accident · FatalLimited investigationFinal report
Date
October 18, 2002, 15:40 local (20:40 UTC)
Place
Missouri Valley, IA
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Landing
Aircraft
N228DWWondrasek Rans S-10 Sakota
Weather
Visual (VMC) · Day
Status
Completed · report June 25, 2003
Report
Approved by Office Director
Parties
FAA-Des Moines, Iowa-FSDO
FAA report
20021018030449A
Case key
55965

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 control and adequate airspeed, resulting in the inadvertent stall/spin. A factor was the low altitude.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of control - in flightLanding - aborted
Aircraft control - not maintainedPilot in commandCause
Airspeed - not maintainedPilot in commandCause
Stall/spin - inadvertentPilot in commandCause
Altitude - lowFactor
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Analysis

The airplane, piloted by a student pilot, was destroyed on impact with terrain following a loss of control while attempting an aborted landing. A witness stated that he saw the airplane approaching to land but did not observe the landing. He stated that he saw the airplane climb out at a very steep angle. He said the airplane appeared to stall when it was at an altitude of about 300 feet above the ground. He said that, when the airplane stalled, the right wing dropped and the airplane entered a vertical dive. The airplane subsequently impacted the ground. Another witness said that he saw the airplane approaching the runway from the south. He said that the airplane was, "coming in fast and steep," and that the airplane hit the runway at a steep angle. The airplane had not been issued an airworthiness certificate or amateur built operating limitations by the Federal Aviation Administration. An examination of the wreckage revealed no preexisting anomalies.

Factual narrative

History of flight

On October 18, 2002, about 1540 central daylight time, an amateur-built Wondrasek Rans S-10 Sakota, N228DW, piloted by a student pilot, was destroyed on impact with terrain following a loss of control while attempting an aborted landing. The landing was being made on runway 34 (2,400 feet by 25 feet, asphalt) at the Missouri Valley Airport, Missouri Valley, Iowa. The 14 CFR Part 91 personal flight was operating in visual meteorological conditions without a flight plan. The pilot, who was the sole occupant, was fatally injured. The local flight originated at an undetermined time.

A witness stated that he saw the airplane approaching to land but did not observe the landing. He stated that he saw the airplane climb out at a very steep angle. He said the airplane appeared to stall when it was at an altitude of about 300 feet above the ground. The witness said that, when the airplane stalled, the right wing dropped and the airplane entered a vertical dive. The airplane subsequently impacted the ground.

Another witness said that he saw the airplane approaching the runway from the south. He said that the airplane was, "coming in fast and steep," and that the airplane hit the runway at a steep angle. He said that he did not see anything else.

Personnel information

The pilot held a student pilot certificate issued on March 17, 1997. The pilot also held a third class medical certificate issued on October 16, 2001. No limitations were listed on the medical certificate. The pilot reported having 150 total flight hours as of the date of the medical certificate. No pilot flight records were recovered.

Aircraft information

The airplane was a kit-built Rans, S-10. The Rans S-10 is a mid-wing monoplane with a tailwheel type landing gear. The fuselage is a fabric covered steel tube structure. The wing is fabric covered aluminum. The airplane was powered by a Rotax model 582 engine, rated at 65 horsepower. The airplane was registered with the Federal Aviation Administration (FAA), however, it did not have registration markings painted on the airplane. According to the FAA, the airplane had not been issued an airworthiness certificate or amateur built operating limitations.

Meteorological information

A weather reporting station located about 15 nautical miles south of the accident site recorded the weather at 1552 as: Sky condition -- clear; Visibility -- 10 statute miles; Wind -- 010 degrees at 10 knots; Temperature -- 20 degrees Celsius; Dewpoint -- 4 degrees Celsius.

Wreckage and impact information

A postaccident examination of the wreckage was conducted on October 19, 2002, by a representative of the FAA. The airplane came to rest about 270 feet east of the north end of runway 34. The airplane did not travel forward of the initial impact point.

The nose section of the airplane was damaged, the landing gear was collapsed, and the right wing leading edge was damaged. The flight control system was examined, Aileron and rudder continuity was confirmed. The elevator control tube was broken at the base of the control stick. The break was consistent with an overstress fracture. No other anomalies were found with respect to the airframe.

The engine was examined and compression was verified on both cylinders. The cylinder head was removed and the cylinders inspected for condition. No anomalies were found. The fuel system was examined and no anomalies were found.

Medical and pathological information

An autopsy was performed on the pilot on October 19, 2002. A Final Forensic Fatal Toxicology Report listed negative results for all tests performed.

Aircraft

Registration
N228DW
Reported as
Wondrasek Rans S-10 Sakota
Category
Airplane, amateur-built
Engine
Rotax 582, 65 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
David J. Wondrasek
Departed
90IA · Missouri Valley, IA
Airport
K35 · Missouri Valley, runway 34, 2,400 × 25 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
49
Injuries
Fatal
Certificate
Student
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Toxicology
Performed
Flight hours
150 total

Weather

Conditions
Visual (VMC) · Day
Wind
10° at 10 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
68 °F, dew point 39 °F
Altimeter
29.77 inHg
Observed at
OMA, 15 nm away

FAA reports on this event · 1

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