Loss of Control in Flight · NTSB CEN18FA004
Aero Vodochody L39C — Vernon, TX
| Date | October 8, 2017 |
| Location | Vernon, TX |
| Aircraft | Aero Vodochody L39C |
| Purpose of flight | Personal |
| Conditions | Day · Visual Meteorological Cond |
| Phase / occurrence | Uncontrolled descent Collision with terr/obj (non-CFIT) |
| Pilot age | 56 |
| Pilot total time | 1,124 hrs · Experienced |
| Time in type | Unknown |
| Fatalities | 1 |
Probable cause
NTSB findings
- Personnel issues-Action/decision-Action-Incorrect action performance-Pilot - C
- Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
- Aircraft-Aircraft oper/perf/capability-Performance/control parameters-(general)-Not attained/maintained - C
- Not determined-Not determined-(general)-(general)-Unknown/Not determined - C
What happened
The commercial pilot of the jet trainer airplane departed on a local personal flight and flew for about an hour before returning to the airport. Witnesses saw the airplane make a high-speed pass over the runway at low altitude. Some thought the pilot may have been conducting a go-around. The airplane then entered a steep left bank, estimated to vary between 45° and 90°, then impacted the ground. The airplane was destroyed by impact and a postcrash fire, which precluded a thorough examination of its systems, including the flight controls; however, the engine displayed signatures of power production at the time of impact. Toxicology testing and autopsy of the pilot did not detect any impairing substances or identify significant physiological issues that may have resulted in incapacitation. It is likely that the pilot experienced an in-flight loss of control while maneuvering at low altitude; however, the reason for the loss of control could not be determined based on the available information.