NTSB Identification: LAX89LA125.
The docket is stored on NTSB microfiche number 38541.
Accident occurred Wednesday, March 15, 1989 in CORONA, CA
Probable Cause Approval Date: 03/12/1990
Aircraft: BELL 206B, registration: N131AT
Injuries: 2 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

DURING A INSTRUCTIONAL FLIGHT, THE FLIGHT INSTRUCTOR DIRECTED THE STUDENT TO MAKE A NORMAL TAKEOFF. THE INSTRUCTOR WAS FOLLOWING THE STUDENT ON THE CONTROLS WHEN THE STUDENT SUDDENLY MOVED THE CYCLIC TO THE LEFT. THE HELICOPTER STARTED TO ROLL TO THE LEFT. THE INSTRUCTOR COULD NOT OVERPOWER THE STUDENT AND REGAIN CONTROL BEFORE THE HELICOPTER ROLLED OVER ON ITS LEFT SIDE. THERE WERE NO NOTED MECHANICAL FAILURES OR MALFUNCTIONS WITH THE HELICOPTER.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

IMPROPER OPERATION OF THE CYCLIC BY THE STUDENT PILOT, FAILURE OF THE STUDENT TO RELINQUISH CONTROL AND INADEQUATE SUPERVISION BY THE FLIGHT INSTRUCTOR.

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