DFW08LA209

NTSB accident investigation · Evektor Aerotechnik Sportstar · St Charles, MO · August 5, 2008

Accident · No injuriesLimited investigationFinal report
Date
August 5, 2008, 15:00 local (20:00 UTC)
Place
St Charles, MO
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N411EVEvektor Aerotechnik Sportstar
Defining event
Takeoff: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report April 22, 2010
Report
Approved by Office Director
Parties
FAA St Louis FSDO
FAA report
20080805843109A
Case key
68745

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 student pilot's failure to maintain control due to his task saturation as a result of his failure to set the pitch trim to the neutral position before takeoff.

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.

Performance/control parameters: pitch controlAircraft › Aircraft oper/perf/capability · Incorrect use/operationEvektor-Aerotechnik SPORTSTAR: 1 caseAll aircraft: 526 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedEvektor-Aerotechnik SPORTSTAR: 10 casesAll aircraft: 3,958 casesProbable cause
Cognitive limitation: cognitive overloadPersonnel issues › Psychological · Student/instructed pilotEvektor-Aerotechnik SPORTSTAR: 1 caseAll aircraft: 9 casesProbable cause
Experience/qualifications: recent experiencePersonnel issues › Experience/knowledge · Student/instructed pilotEvektor-Aerotechnik SPORTSTAR: 1 caseAll aircraft: 76 cases
Inspection: preflight inspectionPersonnel issues › Task performance · Student/instructed pilotEvektor-Aerotechnik SPORTSTAR: 1 caseAll aircraft: 551 cases

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

After taking off, and at about 75 to 100 feet above the runway, the airplane had a sudden pitch down and the student pilot had to pull back on the control stick to maintain control of the airplane. He continued to have difficulty with pitch control as he maneuvered the airplane back to land at the airport, but was unable to simultaneously reduce engine power and maintain control of the airplane. During the landing the airplane touched down hard at a higher-than-normal airspeed with the engine still operating near full power. The student pilot lost directional control and the airplane exited the left side of the runway before nosing over in the grass. An examination of the airplane by Federal Aviation Administration inspectors revealed that the pitch trim was in the full nose-down position. No other anomaly was detected in the airframe or the engine. The pilot later said he didn’t even think about the elevator trim and it was possible that he had taken off with the elevator trim at the wrong setting.

Factual narrative

On August 5, 2008, at approximately 1500 central daylight time (CDT), a Evektor-Aerotechnik AS Sportstar, N411EV, registered to Stearns-Chatten LLC and operated by St. Charles Flying Service, Inc. as a 14 Code of Federal Regulations Part 91 flight, was substantially damaged following a hard landing at St. Charles Airport (K3SQ), St, Charles, Missouri. Visual meteorological conditions prevailed and flight plan had not been filed. The special light sport airplane was substantially damaged by the impact forces. The student pilot, who was the only occupant, reported no injuries.

In a statement provided by the student pilot, he reported use of the checklist and a normal takeoff. While 75 to 100 feet above the runway the airplane had a “sudden plunge” but the student pilot was able to pull back on the control stick to regain control of the airplane. A similar nose-over event occurred as he turned crosswind, but was once again able to regain control. The student pilot stated that he "sensed that (he) was in big trouble” and he “needed to get the plane back on the ground as quickly as possible”. The airplane continued to exhibit a nose-over tendency throughout the traffic pattern to runway 09. While turning to final, the student pilot realized that the power setting was too high, but he could not simultaneously maintain aircraft control and adjust the power setting, so the airplane's airspeed remained higher than normal. The airplane touched down at “high speed” and “hit the runway very hard”. The pilot lost directional control after touchdown and the airplane departed the left side of the runway, traveled through the grass and nosed over.

An on-scene investigation was performed by inspectors from the Federal Aviation Administration (FAA). No pre-existing anomalies were discovered with the airframe or the engine. However, the pitch trim was found in the full nose-down position. The pitch trim system and flight controls were examined and found to operate normally.

When the FAA inspectors interviewed the student pilot and asked him to describe his cockpit checks prior to take-off he did not mention the elevator trim setting during any of the checks. Then, when asked if he had possibly left the elevator trim at the wrong setting he responded “I supposed it is… I didn’t even think about the trim tab”.

The student pilot reported a total of 40 hours of experience with approximately 25 hours in the same make and model as the accident airplane. His most recent flight was on June 23, 2008, approximately 6 weeks prior to the accident flight.

Aircraft

Registration
N411EV
Reported as
Evektor Aerotechnik Sportstar
Category
Airplane
Serial number
2005-0411
Airframe hours
1,516
Engine
Rotax 912 ULS, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
St Charles Flying Service Inc
Registered owner
Stearns Chatten LLC
Airworthiness certificate
Special, Special light-sport (Special)
Last inspection
100 hour · July 25, 2008 · 22 hours before
Departed
3SQ · St Charles, MO
Destination
St Charles, MO
Airport
3SQ · St Charles, runway 09, 3,451 × 50 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
Student pilot
Age
70
Injuries
None
Certificate
Student
Medical
Class 3, With waivers/limitations
Seat
Left
Flight hours
40 total · 25 in this make and model · 10 in the last 90 days · 0 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 7 knots
Visibility
8 statute miles
Lowest ceiling
None
Temperature
93 °F, dew point 75 °F
Altimeter
29.96 inHg
Observed at
KSTL, 8 nm away

Docket · 7

The files NTSB released with the investigation on February 10, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 8.1 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.