On November 12, 1995, a Bell 47D1 (registration N78900) operated by Lewis Aviation was involved in an aviation accident near Shafter, CA. Investigators recorded the probable cause as: the pilot misjudged the altitude and ground clearance while performing an unwarranted low altitude flight maneuver. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A restricted-category helicopter performing aerial applications collided with terrain after the spray boom struck the ground, then erupted in flames; examination found no preimpact mechanical issues.
Incident Overview
A helicopter certificated in the restricted category for aerial applications was involved in an accident following a water rinsing procedure. The pilot had completed several aerial application flights, including a water rinsing flight. After that flight, the pilot's brother, who had been performing flagging duties, boarded the helicopter.
Accident Sequence
During the subsequent flight, the spray boom struck the ground. The helicopter then collided with terrain. Upon coming to rest, the helicopter erupted into flames.
Wreckage Examination
Postaccident examination of the wreckage disclosed no evidence of any preimpact airframe or engine malfunctions or failures.