ENSTROM HELICOPTER CORP 280C
Showlow, AZ — January 21, 2014
Event Information
| Date | January 21, 2014 |
| Event Type | ACC |
| NTSB Number | WPR14CA101 |
| Event ID | 20140121X14119 |
| Location | Showlow, AZ |
| Country | USA |
| Coordinates | 34.26445, -110.00777 |
| Airport | SHOW LOW RGNL |
| Highest Injury | NONE |
Aircraft
| Make | ENSTROM HELICOPTER CORP |
| Model | 280C |
| Category | HELI |
| FAR Part | 091 |
| Aircraft Damage | SUBS |
Conditions
| Light Condition | DAYL |
| Weather | VMC |
Injuries
| Fatal | 0 |
| Serious | 0 |
| Minor | 0 |
| None | 2 |
| Total Injured | 0 |
Event Location
Probable Cause
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.
Full Narrative
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.
About This NTSB Record
This aviation event was investigated by the National Transportation Safety Board (NTSB). NTSB investigates all U.S. civil aviation accidents to determine probable cause and issue safety recommendations to prevent future accidents.