Summary
On January 21, 2014, a Enstrom Helicopter Corp 280C (N51683) was involved in an incident near Showlow, AZ. All 2 people aboard were uninjured. The aircraft sustained substantial damage.
The National Transportation Safety Board determined the probable cause of this incident to be: The pilot's failure to maintain main rotor RPM during the takeoff run in a high density altitude environment, which resulted in a loss of aircraft control and collision with terrain.
The pilot reported that just after takeoff he hovered the helicopter about two feet above the ground before starting a northwesterly takeoff run over an area of grass-covered, uneven terrain. The pilot noted that during the takeoff run, the main rotor RPM began to decay, so he added engine throttle to correct for the RPM decline. The helicopter subsequently descended and during touchdown, the left main landing gear skid collapsed. The helicopter rolled to the left, and the main rotor blades struck the ground. The helicopter sustained substantial damage to the main rotor drive system, tail boom, and fuselage.
The pilot reported that the estimated gross weight of the helicopter at takeoff was 2,300 pounds, or approximately 50 pounds under the maximum gross weight of 2,350 pounds.
This incident is documented in NTSB report WPR14CA101. AviatorDB cross-references NTSB investigation data with FAA registry records to provide comprehensive safety information for aircraft N51683.
Accident Details
Probable Cause and Findings
The pilot's failure to maintain main rotor RPM during the takeoff run in a high density altitude environment, which resulted in a loss of aircraft control and collision with terrain.
Aircraft Information
Registered Owner (Historical)
Analysis
The pilot reported that just after takeoff he hovered the helicopter about two feet above the ground before starting a northwesterly takeoff run over an area of grass-covered, uneven terrain. The pilot noted that during the takeoff run, the main rotor RPM began to decay, so he added engine throttle to correct for the RPM decline. The helicopter subsequently descended and during touchdown, the left main landing gear skid collapsed. The helicopter rolled to the left, and the main rotor blades struck the ground. The helicopter sustained substantial damage to the main rotor drive system, tail boom, and fuselage.
The pilot reported that the estimated gross weight of the helicopter at takeoff was 2,300 pounds, or approximately 50 pounds under the maximum gross weight of 2,350 pounds. The density altitude was calculated to be 7,015 feet mean sea level.
The pilot reported no preaccident mechanical malfunctions or failures with the helicopter that would have precluded normal operation.
Data Source
Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# WPR14CA101