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NTSB Report
August 13, 1991 · Robinson R22B · N4037A
Chandler, AZ
Overview
Report Status
Probable Cause
Event Type
Accident
Date
August 13, 1991
Injury Outcomes
No injuries (1 uninjured)
Location
Chandler, AZ
Aircraft
Robinson R22B
Tail Number
N4037A
Operator
Arizona Wing & Rotor
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX91LA357
THE STUDENT PILOT WAS PRACTICING MANEUVERS IN A LOCAL PRACTICE AREA. HE SAID THAT WHILE PERFORMING SOME TURNS, HE LOST HIS ORIENTATION, BECAME 'DIZZY,' AND THE HELICOPTER HIT THE GROUND HARD, THEN ROLLED OVER. THE HELICOPTER WAS EXAMINED AND NO PREIMPACT MECHANICAL MALFUNCTION OR FAILURE WAS IDENTIFIED.
NTSB Probable Cause
THE FAILURE OF THE STUDENT PILOT TO MAINTAIN ADEQUATE CONTROL OF THE HELICOPTER AND STOP A DESCENT, WHILE MANEUVERING. THE PILOT'S DISORIENTATION WAS A CONTRIBUTING FACTOR.
Full Narrative
THE STUDENT PILOT WAS PRACTICING MANEUVERS IN A LOCAL PRACTICE AREA. HE SAID THAT WHILE PERFORMING SOME TURNS, HE LOST HIS ORIENTATION, BECAME 'DIZZY,' AND THE HELICOPTER HIT THE GROUND HARD, THEN ROLLED OVER. THE HELICOPTER WAS EXAMINED AND NO PREIMPACT MECHANICAL MALFUNCTION OR FAILURE WAS IDENTIFIED.
Flight
Event TypeAccident
Event Time13:40 MST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftRobinson R22B
Tail NumberN4037A
Aircraft CategoryHeli
DamageSubstantial
OperatorArizona Wing & Rotor
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320 · Reciprocating · 160
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 30 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind240° @ 4 kt, gusting 10 kt
Visibility50 sm
CeilingNone
Temperature / Dew Point11 C / 0 C
Altimeter0
Weather SourcePILO