WPR14FA158 · Robinson Helicopter R22 BETA II
Rotortrends Robinson Helicopter R22 BETA II · Accident: fuel contamination while maneuvering
From Green River, UT to Green River, UT
Event
- NTSB case
- WPR14FA158
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 2 · all aircraft and ground
- Ground fatalities
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Robinson Helicopter R22 BETA II
- Aircraft type
- Robinson R22
- Category
- Helicopter
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N13HG
- Operator
- Rotortrends
- Onboard fatalities
- Unknown
- Route
- From Green River, UTTo Green River, UT
- Aircraft age
- About 18 years (built 1996)
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Maneuvering · low-altitude flying
- Defining eventThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Fuel contamination
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Aircraft › Aircraft oper/perf/capability
- Aircraft › Fluids/miscellaneous hardware
- Personnel issues › Task performance
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The pilot's family reported that the purpose of the flight was to look for shed elk antlers. When the helicopter did not return, a search was initiated. The wreckage was located the following day on the side of a gully in rough terrain.
Onsite wreckage documentation revealed that the main rotor blades did not show evidence of rotation at the time of ground contact, and the rotating components of the airframe exhibited little damage. The gascolator container was stained an orange/brown color at the bottom and along the sides. Fluid drained from the gascolator was colorless but murky and had a faint smell of gasoline. A water/alcohol-indicating paste test revealed water contamination in the sample. If the pilot had drained fuel from the helicopter's fuel tank or gascolator before the flight, he would most likely have discovered the contamination. Other than the contaminated fuel, postaccident examination of the airframe and engine revealed no evidence of any anomalies that would have precluded normal operation of the helicopter.
The pilot kept aviation fuel in a barrel on his property, and he would pump the fuel into 5-gallon plastic cans, which he used to fuel the helicopter. Testing of the fluid in some of the cans revealed significant water contamination. One of the cans contained a mixture of about 50 percent aviation fuel and 50 percent water, and another contained a mixture of about 85 percent aviation fuel and 15 percent water.
The lack of damage to the main rotor blades and the rotating components of the airframe indicate that it is likely that the engine experienced a loss of power due to water contamination of the fuel. In order to spot antlers, the pilot was likely maneuvering at a low altitude; therefore, he had little time to react to a loss of engine power or locate a suitable landing site in the rough terrain.
Probable cause
A loss of engine power due to fuel contamination while maneuvering at a low altitude and the pilot's inadequate preflight inspection, which failed to detect the contamination.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record WPR14FA158
- Event ID
- 20140407X83620
- Case number
- WPR14FA158
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status, coordinates. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: 80444280174fb56d528dbf6fe47fc57723b39bc43916226a7b6903f3029c9dfb; retrieved 2026-09-14T16:12:38.407Z.