# NTSB CEN13CA302: Jans Robert Falcon XP, N86FB, Diboll, TX, April 15, 2013

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Data collection · Final report
- Date: April 14, 2013, 19:30 local (Apr 15, 2013, 00:30 UTC)
- Place: Diboll, TX
- Coordinates: 31.309165, -94.668891 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=31.3092&lon=-94.6689&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Defining event: [Maneuvering: Loss of control in flight](https://openairdocs.org/ntsb-events/240)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report July 29, 2013
- Report: Approved by Office Director
- NTSB office: Central Region
- Parties: FAA FSDO Houston
- NTSB case key (mKey): 87028
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN13CA302
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/87028/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=87028
- Page: https://openairdocs.org/ntsb/CEN13CA302

## 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

NTSB's coded findings; those marked are part of the probable cause.

- [Action: forgotten action/omission](https://openairdocs.org/ntsb-findings/02041035): Personnel issues › Action/decision · Pilot (probable cause); cases with it: [All aircraft, 440 cases](https://openairdocs.org/ntsb-findings/02041035/cases.md)
- [Flight control system: control column section](https://openairdocs.org/ntsb-findings/01022701): Aircraft › Aircraft systems · Not specified; cases with it: [All aircraft, 21 cases](https://openairdocs.org/ntsb-findings/01022701/cases.md)

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Maneuvering: Loss of control in flight](https://openairdocs.org/ntsb-events/240) (defining event); cases with it: [All aircraft, 5,002 cases](https://openairdocs.org/ntsb-events/240/sequence.md)

## 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 (not matched to a registry record)
- Reported make and model: JANS ROBERT FALCON XP
- Category: Airplane, amateur-built
- Serial number: 600113
- Airframe hours: 700
- Engines: 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.

- Pilot; age 59; injuries: none; 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 files)

The files NTSB released with the investigation on July 19, 2013, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=87028. 3.9 MB in all.

- Record of Telephone Conversation with Pilot (item 1, .PDF, 43 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40396739&FileExtension=.PDF&FileName=Record%20of%20Telephone%20Conversation%20with%20Pilot-Master.PDF
- Photo 1 Airplane Wreckage (item 2, .PDF, 3.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40396740&FileExtension=.PDF&FileName=Photo%201%20Airplane%20Wreckage-Master.PDF

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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