On June 15, 1988, a Bell 47G3B-1 (registration N73947) operated by Gray's Flying Service, Inc. was involved in an aviation accident near Benoit, MS. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A helicopter experienced engine misfires during takeoff, resulting in a forced landing in a rice field where it nosed over and came to rest inverted. Carburetor bowl inspection found rust particles.
Accident Sequence
The pilot of the helicopter reported that the engine misfired three times during the takeoff roll and subsequently lost partial power. The helicopter descended and settled into a rice field, where the spray booms, already damaged during the landing, became entangled with vegetation. The helicopter then nosed over in the high vegetation, and as the aircraft came to rest inverted, the engine briefly accelerated before shutting down.
Examination Findings
Post-accident examination of the carburetor bowl revealed the presence of rust. Two particles of rust, each measuring approximately 1/4 inch in diameter, were found lying in the bottom of the bowl. No water was detected in the engine or fuel system.