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NTSB Report
June 4, 1993 · Aerospatiale ATR-72-212 · N345AT
Chicago, IL
Overview
Report Status
Probable Cause
Event Type
Accident
Date
June 4, 1993
Injury Outcomes
1 injury (1 serious injury), 67 uninjured
Location
Chicago, IL
Aircraft
Aerospatiale ATR-72-212
Tail Number
N345AT
Operator
Simmons Airlines
Injuries
Serious
NTSB Number
CHI93LA192
APPROXIMATELY FIVE MINUTES AND TEN MILES SOUTHEAST OF O'HARE INTERNATIONAL AIRPORT, AMERICAN EAGLE FLIGHT 4126 ENCOUNTERED 'SEVERE VERTICAL TURBULENCE DURING CLIMB.' A FLIGHT ATTENDANT SUSTAINED A FRACTURED ANKLE DURING A FALL. THE FLIGHT DEPARTING CHICAGO O'HARE EN ROUTE TO CHAMPAIGN, ILLINOIS WAS ABORTED, AND THE CAPTAIN MADE AN UNEVENTFUL LANDING AT O'HARE AIRPORT. THE AIRCRAFT WAS UNDAMAGED.
NTSB Probable Cause
THE PILOT IN COMMAND'S IMPROPER IN-FLIGHT PLANNING/DECISION.
Full Narrative
APPROXIMATELY FIVE MINUTES AND TEN MILES SOUTHEAST OF O'HARE INTERNATIONAL AIRPORT, AMERICAN EAGLE FLIGHT 4126 ENCOUNTERED 'SEVERE VERTICAL TURBULENCE DURING CLIMB.' A FLIGHT ATTENDANT SUSTAINED A FRACTURED ANKLE DURING A FALL. THE FLIGHT DEPARTING CHICAGO O'HARE EN ROUTE TO CHAMPAIGN, ILLINOIS WAS ABORTED, AND THE CAPTAIN MADE AN UNEVENTFUL LANDING AT O'HARE AIRPORT. THE AIRCRAFT WAS UNDAMAGED.
Flight
Event TypeAccident
Event Time18:40 CDT
Nearest Airport0nm N
Runway0
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAerospatiale ATR-72-212
Tail NumberN345AT
Aircraft CategoryAir
OperatorSimmons Airlines
Operating RulePart 121
Engines2
Engine TypeTurboprop
Engine DetailsP&W · Turboprop
Seats68
People & Injuries
Injury Summary1 injury (1 serious injury), 67 uninjured
Fatal0
Serious1
Minor0
Uninjured67
Total68
Crew 1Age 46 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind20° @ 13 kt, gusting 23 kt
Visibility9 sm
CeilingOvercast 1800 ft
Temperature / Dew Point46 / 46
Altimeter29.00 inHg
Observation Time23:50
Weather SourceWFAC