WPR13LA313

NTSB accident investigation · North Wing Uum Sport X2 · Parker Dam, CA · July 7, 2013

Accident · FatalLimited investigationFinal report
Date
July 7, 2013, 09:38 local (16:38 UTC)
Place
Parker Dam, CA
Injuries
1 fatal
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N467YNNorth Wing Uum Sport X2
Defining event
Maneuvering-low-alt flying: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report June 11, 2014
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20130707014259A
Case key
87396

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The student pilot’s abrupt maneuver to avoid transmission wires, which resulted in his loss of airplane control. Contributing to the accident were the pilot’s decision to perform a low-altitude flight, his distracted attention, and his failure to monitor the environment for objects.

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.

Object/animal/substance: wireEnvironmental issues › Physical environment · Awareness of conditionNorth Wing Uum SPORT X2: 1 caseAll aircraft: 588 cases
Performance/control parametersAircraft › Aircraft oper/perf/capability · Not attained/maintainedNorth Wing Uum SPORT X2: 1 caseAll aircraft: 1,269 casesProbable cause

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

Witnesses observed the weight-shift-control aircraft flying at a low altitude down the river, and the solo student pilot waving to people on the ground. As the airplane approached a set of transmission wires about 100 feet above the ground, the pilot banked the airplane sharply right to avoid them. One witness said the bank angle was more than 90 degrees. It is likely that the pilot was unable to maintain control of the airplane during this maneuver as it lost altitude. The airplane subsequently struck another set of wires about 30 feet above the ground and cartwheeled to the ground.

Factual narrative

The North Wing Sport X2 aircraft has two seats and a maximum gross weight of 1,060 pounds. The manufacturer's Pilot Operating Handbook states that prohibited maneuvers include steep turns beyond 60 degrees of bank and pitch angles of more than 30 degrees up or down. The weight shift aircraft was powered by a Rotax 582 engine, which produced 65 horsepower. The pilot had purchased the airplane on May 12, 2013. The aircraft was issued a special airworthiness certificate in the light sport aircraft category on June 21, 2012. On July 7, 2013, about 0938 Pacific daylight time, a North Wing UUM Inc. Sport X2, N467YN, was substantially damaged when it impacted transmission wires and fell to the ground near Parker Dam, California. The pilot, the sole occupant on board, was fatally injured. The pilot/owner was operating the weight-shift-control aircraft under the provisions of 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed for the personal local flight, which was maneuvering for viewers on the ground at the time of the accident. The takeoff location and time are not known. A flight plan had not been filed. A witness said the weight-shift aircraft was flying down the Colorado River towards a large rock on the Arizona side. The aircraft banked right, and the pilot began waving at the people on the California side of the river. There was a set of power lines that spanned the river about 100 feet above the ground, and the pilot turned the aircraft sharply right to avoid them. One witness said he banked more than 90 degrees. The aircraft lost altitude and immediately struck a second set of wires about 30 feet above the ground with its right wing. The weight-shift aircraft cartwheeled to the ground. The San Bernardino County Coroner's Office performed an autopsy on the pilot on July 15, 2013. The FAA's Civil Aeromedical Institute (CAMI) in Oklahoma City, Oklahoma, performed toxicology tests on the pilot. The tests were negative for carbon monoxide, ethanol and drugs. The pilot had a Federal Aviation Administration (FAA) student pilot certificate issued on May 12, 2013. He did not have an airman's medical certificate; however, only a current driver's license was required to fly light sport aircraft. His instructor said that the pilot had about 18 hours of training in the aircraft and about 1,000 hours of experience in hang gliders. Examination of photos taken by local authorities revealed that the aircraft came to rest in front of the Echo Lodge Resort clubhouse, Parker Dam. The parking lot surface was hard pack-dirt and gravel. There was a ground scar/gouge, about 18 inches in length, with red transfer material in and around it. It led to a small fiberglass shattered nose fairing, which had SPORT X2 and NAVAJO written on it. The ground scar was consistent with the aircraft impacting the terrain in a vertical manner, with the nose fairing contacting the ground first. The right wing's outer half leading edge exhibited chaffingand fabric tears. That portion of the wing was slightly bent. The main body of the aircraft was resting on its right side, and numerous support and wing structure components were bent or broken. One of the three propeller blades was broken at its mid-span. The transparent fuel tank was about half full.

Aircraft

Registration
N467YN
Reported as
North Wing Uum Sport X2
Category
Weight-shift
Serial number
LS7022
Built
2012
Engine
Rotax 582, 64 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Jeffrey O. Bline
Registered owner
Jeffrey O. Bline
Airworthiness certificate
Special, Special light-sport (Special)
Departed
Parker Dam, CA
Destination
Parker Dam, CA
Flight plan
Unknown

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
59
Injuries
Fatal
Certificate
Student
Last flight review
May 12, 2013
Seat
Front
Toxicology
Performed
Flight hours
1,000 total · 18 in this make and model · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 3 knots
Visibility
10 statute miles
Temperature
106 °F, dew point 48 °F
Altimeter
29.72 inHg
Observed at
EED, 39 nm away

Docket · 2

The files NTSB released with the investigation on May 21, 2014, on NTSB’s docket system: statements, records, photos and specialists’ reports. 340 KB 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.