Monday, July 31, 2017

Guimbal Cabri G2, N722TX, registered to American Helicopter Leasing Corporation and operated by Texas Rotorwing LLC: Accident occurred July 28, 2017 at Beaumont Municipal Airport (KBMT), Jefferson County, Texas

The National Transportation Safety Board did not travel to the scene of this accident.

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Houston, Texas

Aviation Accident Preliminary Report - National Transportation Safety Board:

Registered to American Helicopter Leasing Corporation

Operated by Texas Rotorwing LLC

NTSB Identification: CEN17LA290
14 CFR Part 91: General Aviation
Accident occurred Friday, July 28, 2017 in Beaumont, TX
Aircraft: HELICOPTERES GUIMBAL CABRI G2, registration: N722TX
Injuries: 2 Minor.

This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

On July 28, 2017, at 1532 central daylight time, a Helicopteres Guimbal Cabri G2 helicopter, N722TX, was substantially damaged when it impacted terrain while maneuvering at the Beaumont Municipal Airport (BMT), Beaumont, Texas. The flight instructor and student pilot sustained minor injuries. The helicopter was registered to American Helicopter Leasing Corp and operated by Texas Rotorwing LLC as a 14 Code of Federal Regulations Part 91 instructional flight. Day visual meteorological conditions prevailed. The flight was not operated on a flight plan. The local flight originated from BMT about 1500.

The flight instructor reported that the student was practicing basic hovering skills at the north ramp area of the airport. He noted that a high engine oil temperature condition occurred while hovering due to the ambient air temperature and the reduced airflow available for engine cooling. To increase airflow and reduce the engine temperature, he performed an air taxi around the perimeter of the airport. About halfway around the airport perimeter, the oil temperature had returned to the normal operating range. All other engine indications were normal at that time. As he completed a turn at the southwest corner of the airport, the helicopter began to lose altitude and would not respond to his control inputs. His efforts to regain control were not successful and the helicopter impacted an open field southwest of the runway.

The helicopter came to rest on its right side. The main rotor blades were fragmented and the tail boom was partially separated.

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