CHI91IA073

NTSB incident investigation · British Aerospace 146-200 · Chicago, IL · January 18, 1991

Incident · No injuriesIncident investigationFinal report
Date
January 18, 1991, 12:40 local (18:40 UTC)
Place
Chicago, IL
Injuries
39 uninjured
Damage
Minor damage
Phase of flight
Pushback/towing
Aircraft
N608AWBritish Aerospace 146-200
Weather
Visual (VMC) · Day
Status
Completed · report September 28, 1992
Report
Approved by Office Director
FAA report
19910118058059I
Case key
14926

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.

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Probable cause

Company procedures and directives not being followed by ground personnel. A factor associated with the accident is complacency by company/operator management.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

On ground/water collision with objectTaxi - pushback/tow
Object - aircraft parked/standing
Procedures/directives - not followedGround personnelCause
ComplacencyCompany/operator managementFactor

Analysis

The incident transport airplane collided with another parked transport airplane while taxiing away from a gate at the start of a revenue flight. Both airplanes sustained minor damage. The pilot stopped the airplane and shut it down. The passengers and crew deplaned using the normal cabin exits. The investigation revealed that signalmen and wingwalkers were routinely ground guiding aircraft at that parking location to a parking spot that was displaced to the left of the painted taxi guide stripes. This practice allowes the tail of a departing airplane to transcribe an arc which passes through an adjacent dedicated parking space as it turnes away from the gate. When this space is occupied by a longer airplane there is insufficient clearance to allow the tail surfaces of the two aircraft to clear each other. According to ramp personnel an emergency stop hand signal was issued by the wingwalker but was not recognized in time to stop the incident.

Aircraft

Registration
N608AW
Reported as
British Aerospace 146-200
Category
Airplane
Serial number
E-2049
Engine
Lycoming ALF 502, 6,970 lbs thrust, turbo fan
Damage
Minor damage
Flight
Part 121
Operator
Air Wisconsin
Airworthiness certificate
Standard, Transport
Destination
GRB · Green Bay, WI
Flight plan
IFR
Airport
ORD · O'Hare Field

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
46
Certificate
Airline transport
Airplane ratings
Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Flight hours
22,500 total · 4,800 in this make and model · 21,000 as pilot in command · 225 in the last 90 days · 75 in the last 30 days · 7 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Temperature
-0 °F, dew point -0 °F

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.