Fuel Exhaustion & Starvation · NTSB CEN12LA203

ENBODY FRANK GY 201 MINICAB — Granite Shoals, TX

1 fatal
DateMarch 24, 2012
LocationGranite Shoals, TX
AircraftENBODY FRANK GY 201 MINICAB (amateur-built)
Purpose of flightPersonal
ConditionsDay · Visual Meteorological Cond
Phase / occurrenceLanding Collision with terr/obj (non-CFIT)
Pilot age74
Pilot total time400 hrs · Building experience
Time in typeUnknown
Fatalities1, 1 serious

Probable cause

A loss of engine power due to fuel starvation as a result of a contaminated carburetor fuel screen. Contributing to the accident was the pilot's impairment from medications that degraded his decision-making and the pilot's improper maintenance of the airplane.

NTSB findings

  • Aircraft-Aircraft systems-Fuel system-Fuel distribution-Damaged/degraded
  • Aircraft-Fluids/misc hardware-Fluids-Fuel-Not specified
  • Personnel issues-Physical-Impairment/incapacitation-Prescription medication-Pilot
  • Personnel issues-Task performance-Maintenance-Scheduled/routine maintenance-Pilot

What happened

Witnesses reported seeing the airplane within a mile of the departure airport and hearing the engine sputter before a total loss of engine power. One witness stated that it sounded like the engine was starved of fuel. The airplane then descended and impacted a tree and terrain. A postaccident examination of the amateur-built airplane revealed that about 75 percent of the carburetor fuel screen was blocked by dirt and debris, which would have decreased the fuel flow to the engine, resulting in a partial loss of engine power. The examination also revealed that duct tape was used to patch holes in the fabric skin and on a fuel line connection, and "C" clamps that were used to support the wing rib to spar attachments. The airplane's logbooks were not recovered during the investigation; however, the overall condition of the airplane suggests that it had not been properly maintained.

The level of postmortem ethanol detected in the pilot's blood, urine, and vitreous fluid would have caused significant impairment; however, the pilot was soaked in gasoline as a result of the accident and postmortem exposure to gasoline containing ethanol has been shown to result in positive ethanol results. Therefore, it cannot be determined what portion, if any, of the ethanol found post mortem was from ingestion. The pilot's impairment from both hydrocodone and tramadol most likely degraded his decision-making ability.

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 →