On November 26, 1993, a Hiller UH-12E (registration N130HA) was involved in an aviation accident near Moore Haven, FL. Investigators recorded the probable cause as: FAILURE OF THE PILOT-IN-COMMAND TO MAINTAIN AIRCRAFT CONTROL FOLLOWING LOSS OF ENGINE POWER FOR UNDETERMINED REASONS. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
While spraying crops at 5 feet AGL, the engine sputtered and quit. The aircraft pitched up and descended into the ground. Postaccident inspection found normal engine operation and fuel system integrity.
Accident Details
The pilot reported that while flying at an altitude of 5 feet above ground level (AGL) during a crop spraying operation, the engine suddenly sputtered and lost power. Subsequently, the aircraft pitched upward and then descended into the ground.
Postaccident Examination
A thorough examination of the engine after the accident revealed that the engine rotated normally and each magneto produced a normal spark. All fuel lines and screens were free of debris. Five gallons of uncontaminated fuel were drained from the aircraft and engine fuel system. Continuity of all flight control and engine controls was confirmed.
Probable Cause
No probable cause was determined from the investigation findings.