Loss of Control in Flight · NTSB ERA12LA364

MOYES B/BAILEY B DRAGONFLY — Trenton, GA

1 fatal High-time pilot
DateMay 26, 2012
LocationTrenton, GA
AircraftMOYES B/BAILEY B DRAGONFLY
Purpose of flightPersonal
ConditionsDay · Visual Meteorological Cond
Phase / occurrenceUncontrolled descent Collision with terr/obj (non-CFIT)
Pilot age45
Pilot total time3,000 hrs · High time
Time in typeUnknown
Fatalities1

Probable cause

The airplane's entry into an uncontrolled descent for reasons that could not be determined because postaccident examination of the airplane did not reveal any anomalies that would have precluded normal operation and it could not be determined whether the pilot had experienced an incapacitating medical event.

NTSB findings

  • Not determined-Not determined-(general)-(general)-Unknown/Not determined - C
  • Personnel issues-Task performance-Use of equip/info-Aircraft control-Not specified - C

What happened

The pilot departed in the experimental light-sport airplane without incident, climbed to an altitude of about 350 to 400 feet above ground level, and flew to a nearby ridgeline. Witnesses reported that the airplane looked slow as it flew parallel to the ridgeline and subsequently entered a left spiraling dive, making two descending 360-degree turns before it impacted trees. The nature of the airplane's departure from controlled flight was consistent with a stall. Postaccident examination of the airframe and engine did not reveal any mechanical malfunctions that would have precluded normal operation. The airplane was equipped with a ballistic parachute system that was found in the armed for flight position; however, it had not been activated. The pilot was familiar with the accident airplane and had flown it regularly during the previous 2 years. The pilot's most recent Federal Aviation Administration medical examination was performed about 9 years before the accident. At the time of the accident, the pilot was taking a medication for the treatment of hypertension. The medical examiner noted no significant gross natural disease or focal myocardial lesions during autopsy; however, it could not be determined whether the pilot became incapacitated before the airplane's descent.

An editorial "what led to it / how to avoid it" analysis for this accident is generated separately and will appear here.

View the official NTSB docket →