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NTSB Report
February 12, 1988 · Robinson R-22B · N2445Q
Westlake Vlg, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
February 12, 1988
Injury Outcomes
No injuries (2 uninjured)
Location
Westlake Vlg, CA
Aircraft
Robinson R-22B
Tail Number
N2445Q
Operator
Rolling Hills Aviation
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX88FA108
WHILE CROSSING OVER A RIDGE LINE THE PLT REPTD THAT THE HELICOPTER PITCHED UP, THEN DOWN, FOLLOWED BY A VIOLENT RIGHT TURN. THE PLT WAS ABLE TO ARREST THE TURN BUT THE HELICOPTER WAS TOO LOW TO THE DOWNWARD SLOPING RIDGE AND A CRASH WAS IMMINENT. THE PLT EXECUTED A LEFT PEDAL TURN TO COLLIDE WITH THE TERRAIN TO THE LEFT WHICH WOULD PREVENT THE HELICOPTER FROM ROLLING DOWNHILL. THE WRECKAGE EXAMINATION DISCLOSED NO EVIDENCE OF ANY PREIMPACT MALFUNCTIONS AND/OR FAILURES IN THE FLIGHT CONTROL SYSTEM.
NTSB Probable Cause
PILOT'S REMEDIAL ACTOIN AFTER ENCOUNTERING A PITCH UP WASS TOO ABRUPT AND THE IMPROPER USE OF THE CYCLIC CONTROL.
Full Narrative
WHILE CROSSING OVER A RIDGE LINE THE PLT REPTD THAT THE HELICOPTER PITCHED UP, THEN DOWN, FOLLOWED BY A VIOLENT RIGHT TURN. THE PLT WAS ABLE TO ARREST THE TURN BUT THE HELICOPTER WAS TOO LOW TO THE DOWNWARD SLOPING RIDGE AND A CRASH WAS IMMINENT. THE PLT EXECUTED A LEFT PEDAL TURN TO COLLIDE WITH THE TERRAIN TO THE LEFT WHICH WOULD PREVENT THE HELICOPTER FROM ROLLING DOWNHILL. THE WRECKAGE EXAMINATION DISCLOSED NO EVIDENCE OF ANY PREIMPACT MALFUNCTIONS AND/OR FAILURES IN THE FLIGHT CONTROL SYSTEM.
Flight
Event TypeAccident
Event Time13:00 PST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftRobinson R-22B
Tail NumberN2445Q
Aircraft CategoryHeli
DamageSubstantial
OperatorRolling Hills Aviation
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360-82C · Reciprocating · 160
Seats2
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 45 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind45° @ 10 kt
Visibility25 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO