On January 2, 2003, a Bell 47G (registration N4759R) was involved in an aviation accident near Idaho Falls, ID. Investigators recorded the probable cause as: In-flight loss of engine power for undetermined reasons. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A helicopter lost engine power during cruise flight, prompting a forced landing to an alfalfa field. During touchdown, main rotor blades severed two tail boom tubes. Post-accident engine testing revealed no anomalies.
Event Details
A pilot reported that while cruising at 5,100 feet MSL and 80 MPH, the helicopter suffered a loss of engine power. The pilot executed a forced landing to a nearby alfalfa field. During the landing, the main rotor blades contacted the tail boom assembly, severing the top two tubes just aft of the last hanger bearing.
Post-Accident Examination
Visual inspection of the helicopter's engine and associated components revealed no evidence of atypical wear or component failure. Following the visual inspection, the operator conducted an engine run. The engine was started and operated at various power settings for approximately 10 minutes. No power surges or anomalies were noted during the test run.
Frequently asked questions
What happened in the 2 Jan 2003 Bell 47G accident near Idaho Falls, ID?
A helicopter lost engine power during cruise flight, prompting a forced landing to an alfalfa field. During touchdown, main rotor blades severed two tail boom tubes. Post-accident engine testing revealed no anomalies.
What aircraft was involved and where did it happen?
The accident on 2 Jan 2003 involved a Bell 47G, registration N4759R, at Idaho Falls, ID.
What was the probable cause of the accident?
In-flight loss of engine power for undetermined reasons.
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