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Last updated: 27 October 2021
Statuts:Enquête Officielle
Date:dimanche 5 juin 1988
Heure:11:40
Type/Sous-type:Silhouette image of generic D228 model; specific model in this crash may look slightly different
Dornier 228-201
Compagnie:Midway Connection
Immatriculation: N259MC
Numéro de série: 8118
Année de Fabrication: 1987
Heures de vol:2007
Equipage:victimes: 0 / à bord: 2
Passagers:victimes: 0 / à bord: 1
Total:victimes: 0 / à bord: 3
Dégats de l'appareil: Substantiels
Conséquences: Repaired
Lieu de l'accident:Chicago-Midway Airport, IL (MDW) (   Etats-Unis d'Amérique)
Phase de vol: Au roulage (TXI)
Nature:Transport de Passagers Nat.
Aéroport de départ:Chicago-Midway Airport, IL (MDW/KMDW), Etats-Unis d'Amérique
Aéroport de destination:Springfield-Capital Airport, IL (SPI/KSPI), Etats-Unis d'Amérique
Détails:
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:

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

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

Sources:
» NTSB


Opérations de secours

NTSB issued 2 Safety Recommendations

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Plan
Ce plan montre l'aéroport de départ ainsi que la supposée destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Chicago-Midway Airport, IL et Springfield-Capital Airport, IL est de 268 km (168 miles).

Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tel qu'ils sont connus à ce jour.
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