- Date
- September 24, 2015, 14:52 local (18:52 UTC)
- Place
- Blacksburg, VA
- Injuries
- 1 serious
- Damage
- Substantial damage
- Phase of flight
- Maneuvering
- Aircraft
- N710JCSchempp-Hirth Ventus 2CT
- Defining event
- Maneuvering: Loss of lift
- Weather
- Visual (VMC) · Day
- Status
- Completed · report January 21, 2016
- Report
- Approved by Office Director
- NTSB office
- Eastern Region Aviation
- Parties
- FAA/FSDO
- FAA report
- 20150924015629A
- Case key
- 92056
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
A loss of thermal lift during a motor glider flight, which resulted in an off-airport landing. Contributing to the accident was the pilot’s failure to maintain adequate clearance from power lines during the off-airport landing attempt.
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.
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 pilot was flying the motor glider in an annual soaring competition. The pilot reported that the motor glider was towed to 2,500 ft and then released. He subsequently performed a routine test of the engine and observed no anomalies; he then shut down the engine and stowed it before beginning the first leg of the competition. About 20 miles from the departure airport, the motor glider began losing altitude due to a loss of thermal lift, and the pilot then prepared for an off-airport landing. He deployed the retractable engine and attempted to start it but was unsuccessful. The pilot set up for landing to a field. He did not see power lines bordering the approach end of the field, and the motor glider impacted the power lines and then descended to the ground in a nose-down attitude.
Factual narrative
On September 24, 2015, about 1452 eastern daylight time, a Schempp-Hirth Ventus 2CT motorglider, N710JC, was substantially damaged when it impacted a wire and trees during an off-airport landing in Blacksburg, Virginia. The commercial pilot was seriously injured. Visual meteorological conditions prevailed, and no flight plan was filed for the local flight, which originated from Virginia Tech/Montgomery Executive Airport (BCB), Blacksburg, Virginia. The personal flight was conducted under the provisions of Title 14 Code of Federal Regulations Part 91.According to the pilot, he was flying in an annual soaring competition. He departed from BCB about 1215 with a tow up to an altitude of 2,500 feet, then released from the tow plane. He subsequently performed a routine test run of the 20-horsepower engine and observed no anomalies. He then shut down and stowed the engine before beginning the first leg of the competition. About 20 miles from BCB, he had difficulty finding thermals for lift. The glider began losing altitude and he prepared for an off airport landing. He deployed the glider's retractable engine; however, as he attempted to start the engine, it "sputtered" and would not run. In a post accident statement, he postulated that he held the decompression valve open long enough for the engine to build rpm, but was not sure due to the circumstances of being low and preparing for an off airport landing. He set up for landing in a field, but did not see the power lines bordering the approach end of the field, and contacted the wires before impacting the ground. According to a witness, they heard the motorglider fly over and "the engine was loud and seemed to be struggling or missing. It did not sound normal." The pilot reported 2,500 hours of total flight experience and 255 of those hours were in the same make and model as the accident motorglider. He held a commercial pilot certificate for airplane single-engine land and instrument airplane. The pilot's last flight review was on May 2, 2015. He did not have a medical certificate, nor was he required to when operating a glider. Examination of the wreckage at the accident site by a Federal Aviation Administration inspector revealed that the motorglider struck a wire and trees and impacted the ground in a nose down attitude. The forward fuselage was crushed, and the right wing was fractured and separated about one-third span from the wing tip. The fuel shut off valve and the fuel pump switch were in the off position. The 1455 recorded weather observation at BCB, located about 7 nautical miles southwest of the accident site, included wind from 100 degrees at 8 knots, visibility 10 statute miles clear skies, temperature 23 degrees C, dew point 12 degrees C; barometric altimeter setting of 30.28 inches of mercury.
Aircraft
- Registration
- N710JC
- Reported as
- Schempp-Hirth Ventus 2CT (NO SERIES)
- Category
- Glider
- Serial number
- 231
- Built
- 2012
- Airframe hours
- 283
- Engine
- Solo 2350, 20 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Annual · March 1, 2015
- Departed
- BCB · Blacksburg, VA
- Destination
- BCB · Blacksburg, VA
- Equipment
- Data recorder, Satellite tracking device
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
- 70
- Injuries
- Serious
- Certificates
- Commercial, Flight instructor
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, With waivers/limitations
- Last flight review
- May 2, 2015
- Seat
- Single
- Restraint
- 4-point
- Flight hours
- 2,500 total · 255 in this make and model · 2,350 as pilot in command · 23 in the last 90 days · 13 in the last 30 days · 3 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 100° at 10 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 73 °F, dew point 54 °F
- Altimeter
- 30.28 inHg
- Observed at
- KBCB, 7 nm away
Docket · 4
The files NTSB released with the investigation on December 1, 2015, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.2 MB 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.