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Atlas / NTSB / GAA15CA097

NTSB CAROL · Event

Event GAA15CA097

2015-05-28 Fort Pierre, South Dakota, United States None 1 aircraft Status: Completed

Registry · N112SH

FAA Aircraft Registry record.

Make / Model

BELL 47G-3B-1

Year of manufacture

1966 · 49 years old at event

TCDS

2H3 · SCOTT'S-BELL 47 INC

Engine

ROLLS-ROYC 250-C10D (317 hp)

Seats / Engines

3 seats · 1 engine

Last airworthiness date

20150127

ADS-B equipped

Yes — Mode-S A03539

Registrant of record

BANK OF UTAH TRUSTEE

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The pilot's inadequate preflight fuel planning that resulted in a total loss of engine power due to fuel exhaustion, and the pilot's failure to maintain control of the helicopter during the subsequent autorotation landing.

Factual narrative

The pilot reported that during cruise flight the helicopter's engine had a total loss of power and he made an emergency landing in a wheat field. He said the main rotor blades contacted the tail boom and sheared off the tail rotor during the landing. The helicopter sustained substantial damage to the tail rotor, tail rotor drive shaft, and tail boom. The pilot reported no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. The pilot reported using a placard as a reference for a fuel tank sight gauge. A postaccident examination by an FAA Aviation Safety Inspector revealed approximately three and one-half gallons of fuel in the right fuel tank and approximately one and one-half gallons of fuel in the left fuel tank. This make and model of helicopter has a capacity of 61 gallons of fuel of which 57.5 gallons of fuel is useable and three and one-half gallons of fuel are unusable. The pilot reported that during cruise flight the helicopter's engine had a total loss of power and he made an emergency landing in a wheat field. He said the main rotor blades contacted the tail boom and sheared off the tail rotor during the landing. The helicopter sustained substantial damage to the tail rotor, tail rotor drive shaft, and tail boom. The pilot reported no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation. The pilot reported using a placard as a reference for a fuel tank sight gauge. A postaccident examination by an FAA Aviation Safety Inspector revealed approximately three and one-half gallons of fuel in the right fuel tank and approximately one and one-half gallons of fuel in the left fuel tank. This make and model of helicopter has a capacity of 61 gallons of fuel of which 57.5 gallons of fuel is useable and three and one-half gallons of fuel are unusable. The fuel lines to the engine are located in the rear of the fuel tanks. A pitch attitude change such as a banking turn or nose down attitude, could have caused a disruption in fuel flow to the engine with the low fuel levels that were found in the fuel tanks. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).

  • C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
  • C Aircraft-Fluids/misc hardware-Fluids-Fuel-Fluid level - C
  • C Personnel issues-Task performance-Planning/preparation-Fuel planning-Pilot - C

Verbatim from NTSB's published report. Source file NTSB_2015_GAA15CA097.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.