CEN13CA302

NTSB accident investigation · Jans Robert Falcon XP · Diboll, TX · April 15, 2013

Accident · Serious injuriesData collectionFinal report
Date
April 14, 2013, 19:30 local (Apr 15, 2013, 00:30 UTC)
Place
Diboll, TX
Injuries
1 serious
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N86FBJans Robert Falcon XP
Defining event
Maneuvering: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report July 29, 2013
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA FSDO Houston
Case key
87028

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 did not properly secure a sand bag in the airplane's rear seat causing its flight controls to become jammed and resulting in the airplane's inability to avoid a collision with power lines.

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.

Action: forgotten action/omissionPersonnel issues › Action/decision · PilotAll aircraft: 440 casesProbable cause
Flight control system: control column sectionAircraft › Aircraft systems · Not specifiedAll aircraft: 21 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

While the pilot was conducting a fast taxi test, the experimental airplane that he had been rebuilding for almost 2 years, unexpectedly became airborne. The pilot's intent was not to fly. There was not enough runway remaining to land safely so the pilot decided to continue flying the airplane about 5 miles to an airport that had multiple long runways and to try to land. He flew the airplane in a large circle trying to get the feel for the controls so he would be better prepared to land. There was a 10-pound sandbag in the rear seat that the pilot used to lay on the front canard when the airplane was parked. He said that the weight helped the airplane from tipping over backward when the motor was not running and no one in the cockpit. He said that he intended to buckle the sandbag in prior to the taxi test, but did not. While circling for a long final approach, the elevator froze and the airplane pitched down. The pilot could not move the control stick rearward to arrest the descent. He tried everything to release the control jam including putting so much back pressure on the control stick that it bent, still with no change. He saw wires approaching and was hoping that he would clear them, but the airplane hit the wires in the middle of the lines. Both wings came off and the airplane caught fire and fell straight down, about 50 feet. After impact, three men appeared and freed the pilot from the burning airplane. The pilot later looked at the burned out fuselage and confirmed that the sandbag was where he thought it had ended up, between the back seat and the rear control stick. He said that he should have taken the time to secure the sandbag prior to the taxi test.

Factual narrative

While the pilot was conducting a fast taxi test, the experimental airplane that he had been rebuilding for almost 2 years, unexpectedly became airborne. The pilot's intent was not to fly. There was not enough runway remaining to land safely so the pilot decided to continue flying the airplane about 5 miles to an airport that had multiple long runways and to try to land. He flew the airplane in a large circle trying to get the feel for the controls so he would be better prepared to land. There was a 10-pound sandbag in the rear seat that the pilot used to lay on the front canard when the airplane was parked. He said that the weight helped the airplane from tipping over backward when the motor was not running and no one in the cockpit. He said that he intended to buckle the sandbag in prior to the taxi test, but did not. While circling for a long final approach, the elevator froze and the airplane pitched down. The pilot could not move the control stick rearward to arrest the descent. He tried everything to release the control jam including putting so much back pressure on the control stick that it bent, still with no change. He saw wires approaching and was hoping that he would clear them, but the airplane hit the wires in the middle of the lines. Both wings came off and the airplane caught fire and fell straight down, about 50 feet. After impact, three men appeared and freed the pilot from the burning airplane. The pilot later looked at the burned out fuselage and confirmed that the sandbag was where he thought it had ended up, between the back seat and the rear control stick. He said that he should have taken the time to secure the sandbag prior to the taxi test.

Aircraft

Registration
N86FB
Reported as
Jans Robert Falcon XP
Category
Airplane, amateur-built
Serial number
600113
Airframe hours
700
Engine
Rotax 503, 52 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Personal · Part 91
Operator
Jerry R Morehouse
Registered owner
Jerry R Morehouse
Airworthiness certificate
Special, Experimental light sport (Special)
Last inspection
Condition · March 15, 2013
Departed
Beulla, TX
Destination
LFK · Angelina County, TX
Airport
LFK · Angelina County Airport

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
59
Injuries
None
Certificate
Sport Pilot
Airplane ratings
Single-engine land
Seat
Front
Flight hours
400 total · 50 in this make and model · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
75 °F, dew point 63 °F
Altimeter
29.87 inHg
Observed at
LFK, 5 nm away

Docket · 2

The files NTSB released with the investigation on July 19, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.9 MB in all.