LAX08LA290

NTSB accident investigation · Airborne XT-912 · Chelan, WA · September 6, 2008

Accident · FatalLimited investigationFinal report
Date
September 6, 2008, 11:00 local (18:00 UTC)
Place
Chelan, WA
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N227EKAirborne XT-912
Defining event
Initial climb: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report July 28, 2009
Report
Approved by Office Director
Parties
FAA FSDO
FAA report
20080906844649A
Case key
68884

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 adequate airspeed during initial climb, which resulted in an aerodynamic stall.

Findings · 3

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 · PilotAirborne XT-912: 2 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: pitch controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedAirborne XT-912: 1 caseAll aircraft: 526 casesProbable cause
Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedAirborne XT-912: 1 caseAll aircraft: 1,681 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

The private pilot had stopped flying about 1970, resuming his flying again about 11 months prior to the accident. He received instruction in weight-shift aircraft with the goal of obtaining his sport pilot endorsement. On the day of the accident, the pilot received his solo endorsement from his instructor and made a 1-hour solo flight. After resting for about an hour, the pilot began his second solo flight. The accident occurred about 40 minutes into this flight. According to witnesses, the pilot performed several touch-and-go landings without incident. During the initial takeoff climb following another touch-and-go landing, the aircraft climbed at a "steep" angle, and at an altitude of about 100 to 200 feet above ground level, the aircraft rolled left, nosed down, spiraled and descended to ground impact. One witness stated that the engine remained at takeoff power throughout the entire event. An on-scene examination of the wreckage conducted by a Federal Aviation Administration inspector indicated the aircraft impacted in a near-vertical attitude. The examination revealed no evidence of any preimpact damage or discrepancies. An autopsy determined the pilot's cause of death was blunt force trauma, and the findings in the autopsy report did not include any notations of preexisting disease. The reason the pilot lost control of the aircraft could not be determined.

Factual narrative

On September 6, 2008, about 1100 Pacific daylight time, an experimental Airborne XT-912 weight-shift aircraft, N227EK, impacted the ground following a loss of control during initial takeoff climb from the Lake Chelan Airport, Chelan, Washington. The private pilot, the sole occupant, was killed, and the aircraft was destroyed. Visual meteorological conditions prevailed, and no flight plan was filed for the local solo instructional flight. The Title 14 Code of Federal Regulations Part 91 flight originated from the Lake Chelan Airport about 1020. On the day of the accident, the pilot received his solo endorsement from his instructor and made a 1-hour solo flight. After resting for about an hour, the pilot began his second solo flight. The accident occurred about 40 minutes into this flight. According to the instructor, he was flying with another student and was in radio communication with the pilot during his flight. Just prior to the accident, the flight instructor heard the pilot announce he would be making a full stop landing. According to witnesses, the pilot performed several touch-and-go landings on runway 02 without incident. During initial takeoff climb following another touch-and-go landing, the aircraft climbed at a "steep" angle, and at an altitude of about 100 to 200 feet above ground level, the aircraft rolled left, nosed down, spiraled, and descended to ground impact. One witness stated that the engine remained at takeoff power throughout the entire event. A Federal Aviation Administration (FAA) inspector conducted an on scene examination of the wreckage. The inspector reported that his observations indicated the aircraft impacted in a near vertical attitude on the taxiway west of the runway. His inspection revealed no evidence of any pre-impact damage or discrepancies. Examination of the aircraft's maintenance records by the FAA inspector indicated that the aircraft was certificated in the experimental category for the purpose of operating light sport aircraft on January 28, 2008. At the time of certification, the aircraft had a current condition inspection. At the time of the accident, the aircraft had accumulated about 35 to 40 hours of flight time. The pilot was reportedly in the process of purchasing the aircraft from the flight instructor. The pilot, age 74, held a private pilot certificate with a single engine land airplane rating. His last FAA medical certificate was issued in November 1970. According to the FAA inspector, who reviewed the pilot's flight logbooks, the pilot had accumulated about 265 total flight hours, with 215 of those hours acquired prior to 1968. The pilot began flying again in October 2007, receiving instruction in weight-shift aircraft with the goal of obtaining his sport pilot endorsement. In February 2008, he received about 10 hours flight instruction in a Cessna 172 and successfully completed a biennial flight review. Following the flight review, the pilot had flown about 30 hours, most of it in theaccident aircraft. According to the flight instructor, on the morning of the accident, the pilot appeared to be well rested, alert, and in a positive frame of mind. Witnesses reported that between flights, the pilot had several conversations and no abnormal observations were made. An autopsy of the pilot was conducted by the Chelan County Coroner's Office. The cause of death was reported as "multiple internal injuries due to blunt impact to the head, trunk and extremities." The findings in the autopsy report did not include any notations of pre-existing disease. Toxicology tests were conducted by the FAA's Toxicology and Accident Research Laboratory. Ethanol was detected at 10 mg/dL in muscle and 22 mg/dL in liver. The drugs amlodipine and atenolol were detected (unquantified) in liver and kidney.

Aircraft

Registration
N227EK
Reported as
Airborne XT-912
Category
Weight-shift
Serial number
XT912206
Airframe hours
35
Engine
Rotax 912UL, reciprocating
Damage
Destroyed
Flight
Instructional · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · January 28, 2008 · 35 hours before
Departed
S10 · Chelan, WA
Destination
S10
Airport
S10 · Lake Chelan, runway 02, 3,503 × 60 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
Pilot
Age
74
Injuries
Fatal
Certificate
Private
Airplane ratings
Single-engine land
Medical
Sport pilot
Last flight review
February 28, 2008
Seat
Front
Toxicology
Performed
Flight hours
265 total · 30 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.