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Atlas / NTSB / CHI91FA032

NTSB CAROL · Event

Event CHI91FA032

1990-11-26 CHICAGO, Illinois, United States Airport · ORD Minor 1 aircraft Status: Completed

Registry · N5LL

FAA Aircraft Registry record.

Make / Model

PIPER PA-31-310

Year of manufacture

1978 · 12 years old at event

Engine

LYCOMING TI0-540 SER (310 hp)

Seats / Engines

8 seats · 2 engines

Last airworthiness date

19780114

ADS-B equipped

Yes — Mode-S A63643

Registrant of record

INTERNATIONAL AIR SERVICES INC TRUSTEE

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

THE DRIVER'S INADEQUATE VISUAL LOOKOUT. A FACTOR IN THE ACCIDENT WAS THE COMPANY'S CONFIGURING THE TRUCK WITH MIRRORS WHICH OBSTRUCT FORWARD VISIBILITY.

Factual 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. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1990_CHI91FA032.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.