Pilot Debrief

ZENITH CH701SP near Laddonia, MO — 2017-07-27

Final reportCEN17FA288
Sign in to save
Date
2017-07-27
Location
Laddonia, MO, USA
Aircraft
ZENITH CH701SP
Registration
N701XL
Category
Airplane
Highest injury
Fatal
Fatalities
2
Phase of flight
Takeoff roll

Probable cause

The pilot's decision to take off at night and continue visual flight into instrument meteorological conditions. which resulted in the pilot becoming spatially disoriented and losing control of the airplane. Contributing to the accident were the pilot's degraded decision-making due to his use of a combination of impairing prescription drugs, and the pilot's lack of instrument and night flight experience.

Contributing factors

Contributing to the accident were the pilot's degraded decision-making due to his use of a combination of impairing prescription drugs, and the pilot's lack of instrument and night flight experience.

NTSB narrative

Although he had no night or instrument flight experience, the sport pilot departed in a non-instrument-certificated light sport airplane at night with an overcast ceiling and thunderstorms in the area. Radar data showed that the airplane proceeded on course for about 9 minutes and then entered a right descending turn that continued to ground impact, which was consistent with the pilot attempting to return to the departure airport and not paying attention to his altitude. Examination of the accident site revealed that the airplane struck open level farm land in a right wing-low, nose-low attitude. Examination of the engine and airframe did not reveal any evidence of preimpact anomalies that would have precluded normal operation. It is likely that the pilot continued visual flight into an area of instrument meteorological conditions, which resulted in the pilot experiencing a loss of visual reference and subsequent spatial disorientation. The pilot had a history of chronic insomnia treated with temazepam, a sedating benzodiazepine, and was regularly prescribed hydrocodone, an opioid analgesic. Toxicology testing detected these drugs and their metabolites in the pilot's system. The pilot was likely impaired by effects from his use of temazepam, and the impairing effects of temazepam were likely enhanced by the pilot's use of hydrocodone. It is likely that the pilot's decision-making was degraded due to his combined use of temazepam and hydrocodone.

Analysis

Primary failure mode
Human factors
First missed decision gate
Pilot should have obtained a preflight weather briefing before departure.

NTSB coding

Evidence available

  • ADS-B / radar
  • Photos
  • 7 docket documents
View NTSB final reportView NTSB docket

Docket documents7

Related mishaps