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NTSB Report
June 2, 1990 · Cessna 152 II · N49796
Rialto, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
June 2, 1990
Injury Outcomes
2 injuries (2 minor injuries)
Location
Rialto, CA
Aircraft
Cessna 152 II
Tail Number
N49796
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
LAX90LA205
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.
NTSB Probable Cause
PILOT'S INADEQUATE VISUAL OUTLOOK WHICH RESULTED IN AN INFLIGHT ENCOUNTER WITH WAKE TURBULENCE PRODUCED BY A HOVERING HELICOPTER.
Full Narrative
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.
Flight
Event TypeAccident
Event Time13:45 PDT
Nearest AirportRIALTO (0nm N)
Runway24
Runway Length4500 ft
Runway Width75 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 152 II
Tail NumberN49796
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-235 · Reciprocating · 110
Seats2
People & Injuries
Injury Summary2 injuries (2 minor injuries)
Fatal0
Serious0
Minor2
Uninjured0
Total2
Crew 1Age 19 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind290° @ 4 kt
Visibility25 sm
CeilingNone
Temperature / Dew Point45 C
Altimeter29.00 inHg
Observation Time19:58
Weather SourceWFAC