CEN10LA074

NTSB accident investigation · Gibson Mark Manta 503 · Magnolia, TX · December 13, 2009

Accident · Serious injuriesLimited investigationFinal report
Date
December 13, 2009, 17:20 local (23:20 UTC)
Place
Magnolia, TX
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N193AWGibson Mark Manta 503
Defining event
Maneuvering-low-alt flying: Low altitude operation/event
Weather
Instrument (IMC) · Day
Status
Completed · report March 23, 2010
Report
Approved by Office Director
NTSB office
Central Region
Parties
Federal Aviation Administration
Case key
75169

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 clearance from a static wire while maneuvering and his improper decision to fly with a low overcast sky.

Findings · 4

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotGibson Mark MANTA 503: 1 caseAll aircraft: 9,295 casesProbable cause
Object/animal/substance: wireEnvironmental issues › Physical environment · Response/compensationGibson Mark MANTA 503: 1 caseAll aircraft: 588 casesProbable cause
Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedGibson Mark MANTA 503: 1 caseAll aircraft: 1,310 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 maneuvering near his home, the sport pilot decided to find a landing area near his house to wait out deteriorating weather. After selecting a potential parking lot, the pilot elected to perform a low pass to see if the area was suitable for landing. While approaching the far end of the parking lot the pilot observed power lines running perpendicular to his flight path. During an attempt to fly under the wires, the weight-shift trike impacted a static wire and subsequently the ground. An automated weather observing system 19 nautical miles northeast from the site of the accident, was reporting an overcast ceiling at 300 feet around the time of the accident. There were no reported anomalies with the trike's flight control system. Due to the pilot's injuries, he was unable to submit a NTSB 6120.1 accident reporting form.

Factual narrative

On December 13, 2009, about 1720 central standard time, a Gibson Mark, Manta 503 weight-shift trike, N193AW, was substantially damaged during impact with a static wire while maneuvering near Magnolia, Texas. The sport pilot, the sole occupant, sustained serious injuries. The trike was registered to and operated by the pilot. Instrument meteorological conditions prevailed and no flight plan was filed for the 14 Code of Federal Regulations Part 91 local flight. In a telephone conversation with the NTSB investigator-in-charge (IIC), the pilot reported that while flying near his house, the clouds appeared to extend all the way to the ground. The pilot decided to find a landing area near his house to wait out the deteriorating weather. After selecting a potential parking lot, the pilot elected to perform a low pass to see if the area was suitable for landing. While approaching the far end of the parking lot the pilot observed power lines running perpendicular to his flight path. During an attempted to fly under the wires, the trike impacted a static wire and subsequently the ground. Due to the pilot's injuries, he was unable to submit a NTSB 6120.1 accident form. A Federal Aviation Administration (FAA) inspector that responded to the accident site reported that the trike’s undercarriage had sustained structural damage. In addition, there were no reported anomalies with the trike’s flight control system. At 1753, the automated weather observing system at the Loan Star Executive Airport (CXO), Conroe, Texas, located 19 nautical miles northeast from the site of the accident, reported wind from 110 degrees at 4 knots, 10 statute miles visibility, overcast at 300 feet, temperature 52 degrees Fahrenheit, dew point 52 degrees Fahrenheit, and a barometric pressure setting of 30.01 inches of Mercury.

Aircraft

Registration
N193AW
Reported as
Gibson Mark Manta 503
Category
Weight-shift, amateur-built
Serial number
M503-08-001
Engine
Rotax 503, 52 horsepower
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Departed
Conroe, TX
Destination
Conroe, TX

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
47
Injuries
Serious
Certificate
Sport Pilot
Airplane ratings
Single-engine land
Seat
Front

Weather

Conditions
Instrument (IMC) · Day
Wind
110° at 4 knots
Visibility
10 statute miles
Lowest ceiling
300 ft overcast
Temperature
52 °F, dew point 52 °F
Altimeter
30.01 inHg
Observed at
CXO, 19 nm away

Docket · 2

The files NTSB released with the investigation on January 21, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.0 MB in all.