ASN Aircraft accident Dornier 228-201 N259MC Chicago-Midway Airport, IL (MDW)
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Status:Accident investigation report completed and information captured
Date:Sunday 5 June 1988
Type:Silhouette image of generic D228 model; specific model in this crash may look slightly different
Dornier 228-201
Operator:Midway Connection
Registration: N259MC
MSN: 8118
First flight: 1987
Total airframe hrs:2007
Crew:Fatalities: 0 / Occupants: 2
Passengers:Fatalities: 0 / Occupants: 1
Total:Fatalities: 0 / Occupants: 3
Aircraft damage: Substantial
Aircraft fate: Repaired
Location:Chicago-Midway Airport, IL (MDW) (   United States of America)
Phase: Taxi (TXI)
Nature:Domestic Scheduled Passenger
Departure airport:Chicago-Midway Airport, IL (MDW/KMDW), United States of America
Destination airport:Springfield-Capital Airport, IL (SPI/KSPI), United States of America
The captain was completing the checklist during passenger loading and the first officer secured the door and came forward. the captain started the #2 engine and began single engine taxi while attempting a right turn to stay clear of a parked Dornier (N264MC). As N259MC began rolling forward, the captain noted the nosewheel steering was inoperative. He applied normal braking, but got no response and N259MC began a left turn. The captain switched the hydraulic pump from 'normal' to 'man on' (manual); however, before hydraulic pressure was built up by battery power, N259MC collided with N264MC. An investigation revealed the #2 generator was not connected to the generator bus. No part malfunction/failure was found during checks of the aircraft systems. The nosewheel steering and normal brakes were electro-hydraulically actuated. Without generator power, the hydraulic system nosewheel steering and normal brakes would not have been operating with the hydraulic switch in the 'normal' position. An emergency (parking) brake was available, but it was not used. The training program, operation manual and Dornier 228-series pilot operating handbook did not address single-engine ground operation or the effects of an interruption in generator power.

Probable Cause:

hydraulic system..not engaged
brakes(emergency)..not used..pilot in command
aircraft control..not maintained..pilot in command

crew/group coordination..inadequate..pilot in command
electrical system,generator..not engaged
aircraft manuals,system information..inadequate
procedure inadequate..manufacturer
object..aircraft parked/standing

Accident investigation:

Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 2 months
Accident number: CHI88FA128
Download report: Summary report

Ground collision
Damaged on the ground


Follow-up / safety actions

NTSB issued 2 Safety Recommendations

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This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Chicago-Midway Airport, IL to Springfield-Capital Airport, IL as the crow flies is 268 km (168 miles).

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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