No fatalities

11 Jul 2014: ROBINSON HELICOPTER COMPANY R44 II II — Englewood, CO

Englewood, CO, United States

On 11 Jul 2014, a ROBINSON HELICOPTER COMPANY R44 II II was involved in an aviation accident near Englewood, CO. No fatalities were reported. Investigators recorded the probable cause as: The pilot did not maintain control of the helicopter during the takeoff resulting in low rotor rpm and impact of the fuel trailer during the running landing. This summary draws on records from NTSB; 12 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 1778583330Data APIEditorial standards

A helicopter struck a fuel trailer after the pilot performed a running landing due to a low rotor rpm warning. Witness reported low power indications and multiple yaws. No mechanical issues were found.

Incident Overview

A helicopter accident occurred during a takeoff attempt from a hover near a taxiway. According to a witness, the helicopter transitioned westward with "low power indications" and "multiple yaws." The helicopter then settled to the ground and struck a fuel trailer located adjacent to the taxiway.

Pilot Account

The pilot reported that he transitioned the helicopter to a hover and taxied adjacent to the taxiway. When he attempted a forward takeoff from the hover, the "low rotor rpm warning sounded, the helicopter lost lift," and he performed a "running landing." The pilot stated that there were no mechanical malfunctions or failures with the helicopter during the flight.

Inspection Findings

A Federal Aviation Administration (FAA) inspector confirmed that there was nothing mechanically wrong with the helicopter. However, the accident resulted in the separation of one tail rotor blade and the stabilizer from the tail boom.

Conclusion

The accident sequence involved a low rotor rpm warning during takeoff, leading to a loss of lift and a running landing that ended with a collision with a fuel trailer. The helicopter sustained damage to the tail rotor and stabilizer.

Contributing factors

Causes

PilotProp/rotor parameters — Not attained/maintained

Other contributing factors

Contributed to outcome