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NTSB Report
November 26, 1990 · Gates Learjet 25B · N5LL
Chicago, IL
Overview
Report Status
Probable Cause
Event Type
Accident
Date
November 26, 1990
Injury Outcomes
No injuries (2 uninjured, 1 unknown outcome)
Location
Chicago, IL
Aircraft
Gates Learjet 25B
Tail Number
N5LL
Operator
Connie Kalitta Services
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI91FA032
A TAXIING TWIN TURBOJET COLLIDED AT NIGHT WITH AN AIRLINE SERVICE TRUCK IN AN INTERSECTION OF A TAXIWAY AND SERVICE ROAD. WEATHER WAS CLEAR AND DRY. THE AIRCREW SAW THE TRUCK SLOW APPROACHING THE INTERSECTION AND DID NOT NOTICE IT AGAIN UNTIL IT ENTERED THE TAXIWAY. THE DRIVER STATED HE STOPPED, DID NOT SEE THE PLANE AND PROCEEDED. THE CREW STATED TAXI LIGHTS, ROTATING BECAONS AND NAVIGATION LIGHTS WERE ON. THE TAXIWAY AND INTERSECTION WERE NOT ILLUMINATED. THE BACKGROUND IN THE DRIVER'S VIEW TO THE APPROACHING AIRPLANE WAS A BRIGHTLY LIT TERMINAL. THE DRIVER'S VIEW FROM THE TRUCK CAB WAS PARTIALLY OBSTRUCTED BY EYE-LEVEL MIRRORS MOUNTED OUTBOARD ON EACH DOOR FOR A REAR VIEW PAST THE TRUCK'S CUSTOM BODY.
NTSB Probable Cause
THE DRIVER'S INADEQUATE VISUAL LOOKOUT. A FACTOR IN THE ACCIDENT WAS THE COMPANY'S CONFIGURING THE TRUCK WITH MIRRORS WHICH OBSTRUCT FORWARD VISIBILITY.
Full Narrative
A TAXIING TWIN TURBOJET COLLIDED AT NIGHT WITH AN AIRLINE SERVICE TRUCK IN AN INTERSECTION OF A TAXIWAY AND SERVICE ROAD. WEATHER WAS CLEAR AND DRY. THE AIRCREW SAW THE TRUCK SLOW APPROACHING THE INTERSECTION AND DID NOT NOTICE IT AGAIN UNTIL IT ENTERED THE TAXIWAY. THE DRIVER STATED HE STOPPED, DID NOT SEE THE PLANE AND PROCEEDED. THE CREW STATED TAXI LIGHTS, ROTATING BECAONS AND NAVIGATION LIGHTS WERE ON. THE TAXIWAY AND INTERSECTION WERE NOT ILLUMINATED. THE BACKGROUND IN THE DRIVER'S VIEW TO THE APPROACHING AIRPLANE WAS A BRIGHTLY LIT TERMINAL. THE DRIVER'S VIEW FROM THE TRUCK CAB WAS PARTIALLY OBSTRUCTED BY EYE-LEVEL MIRRORS MOUNTED OUTBOARD ON EACH DOOR FOR A REAR VIEW PAST THE TRUCK'S CUSTOM BODY.
Flight
Event TypeAccident
Event Time05:15 CST
Nearest AirportChicago O'Hare (0nm N)
Runway0
Runway Length0
Runway Width0
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftGates Learjet 25B
Tail NumberN5LL
Aircraft CategoryAir
DamageSubstantial
OperatorConnie Kalitta Services
Operating RulePart 91
Engines2
Engine TypeTurbojet
Engine DetailsGe · CJ-610-6 · Turbojet · 2950
Seats4
People & Injuries
Injury SummaryNo injuries (2 uninjured, 1 unknown outcome)
Fatal0
Serious0
Minor0
Uninjured2
Total3
Crew 1Age 28 · First Class
Conditions
ConditionsVMC
LightDark Night
Wind100° @ 9 kt
CeilingNone
Temperature / Dew Point39 C / 30 C
Altimeter0
Observation Time10:50
Weather SourceWFAC