NTSB Identification: LAX90LA205.
The docket is stored on NTSB microfiche number 42273.
Accident occurred Saturday, June 02, 1990 in RIALTO, CA
Probable Cause Approval Date: 09/28/1992
Aircraft: CESSNA 152 II, registration: N49796
Injuries: 2 Minor.

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

A CESSNA 152II LOST CONTROL AND COLLIDED WITH TERRAIN DURING TAKEOFF. ACCORDING TO WITNESSES THE AIRPLANE ENCOUNTERED THE WAKE VORTICES OF A HOVERING BELL HELICOPTER 412 IMMEDIATELY BEFORE THE LOSS OF CONTROL. THE PILOT IN COMMAND INDICATED IN HIS CREWMEMBER STATEMENT, THAT HE WAS ON THE INITIAL TAKEOFF CLIMB WHEN HE SAW THE HELICOPTER HOVERING PARALLEL TO THE TAXIWAY. THE AIRPLANE THEN ENCOUNTERED THE HELICOPTER'S ROTORWASH. THE PILOT DID NOT INDICATE IN HIS STATEMENT THAT HE TOOK ANY EVASIVE ACTIONS ONCE HE SAW THE HELICOPTER.

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

PILOT'S INADEQUATE VISUAL OUTLOOK WHICH RESULTED IN AN INFLIGHT ENCOUNTER WITH WAKE TURBULENCE PRODUCED BY A HOVERING HELICOPTER.

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