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NTSB Report
September 20, 1991 · Robinson R22B · N2289K
Wexford, PA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 20, 1991
Injury Outcomes
No injuries (2 uninjured)
Location
Wexford, PA
Aircraft
Robinson R22B
Tail Number
N2289K
Operator
Frank R Zokaites
Injuries
None
Aircraft Damage
Substantial
NTSB Number
NYC91LA241
AT 600 FEET AGL THE PILOT ATTEMPTED A PRACTICE AUTOROTATION. AT 200 FEET AGL THE PILOT SAID THE ENGINE LOST POWER AND 'STOPPED COMPLETELY'. THE PILOT DID NOT INDICATE WHAT HIS ENGINE OR ROTOR INSTRUMENTS WERE INDICATING PRIOR TO THE LOSS OF ENGINE POWER. THE MAIN ROTOR BLADES CONTACTED TREES AT APPROXIMATELY 25 FEET AGL, AND THE HELICOPTER CAME TO REST ON A 25% UPWARD SLOPE. THE HELICOPTER AND ENGINE WERE REMOVED FROM THE ACCIDENT SITE. THE FAA TEST RAN THE ENGINE FOR 45 MINUTES AND DID NOT FIND ANY DISCREPANCIES.
NTSB Probable Cause
THE PILOT'S IMPROPER PROCEDURES DURING A PRACTICE AUTOROTATION, AND SELECTION OF UNSUITABLE TERRAIN. CONTRIBUTING TO THE ACCIDENT WAS A LOSS OF ENGINE POWER FOR UNDETERMINED REASONS, AT A LOW ALTITUDE.
Full Narrative
AT 600 FEET AGL THE PILOT ATTEMPTED A PRACTICE AUTOROTATION. AT 200 FEET AGL THE PILOT SAID THE ENGINE LOST POWER AND 'STOPPED COMPLETELY'. THE PILOT DID NOT INDICATE WHAT HIS ENGINE OR ROTOR INSTRUMENTS WERE INDICATING PRIOR TO THE LOSS OF ENGINE POWER. THE MAIN ROTOR BLADES CONTACTED TREES AT APPROXIMATELY 25 FEET AGL, AND THE HELICOPTER CAME TO REST ON A 25% UPWARD SLOPE. THE HELICOPTER AND ENGINE WERE REMOVED FROM THE ACCIDENT SITE. THE FAA TEST RAN THE ENGINE FOR 45 MINUTES AND DID NOT FIND ANY DISCREPANCIES.
Flight
Event TypeAccident
Event Time11:30 EDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftRobinson R22B
Tail NumberN2289K
Aircraft CategoryHeli
DamageSubstantial
OperatorFrank R Zokaites
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-B2C · Reciprocating · 160
Seats2
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 35 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind290° @ 13 kt
Visibility15 sm
CeilingBroken clouds 2800 ft
Temperature / Dew Point64 F / 0 C
Altimeter30.00 inHg
Weather SourcePILO