BOEING 787
Chicago, IL — October 19, 2023
Event Information
| Date | October 19, 2023 |
| Event Type | INC |
| NTSB Number | DCA24LA043 |
| Event ID | 20231219193541 |
| Location | Chicago, IL |
| Country | USA |
| Coordinates | 41.99189, -87.92761 |
| Airport | CHICAGO O'HARE INTL |
| Highest Injury | NONE |
Aircraft
| Make | BOEING |
| Model | 787 |
| Category | AIR |
| FAR Part | 091 |
| Aircraft Damage | MINR |
Conditions
| Light Condition | NITE |
| Weather | VMC |
Injuries
| Fatal | 0 |
| Serious | 0 |
| Minor | 0 |
| None | 2 |
| Total Injured | 0 |
Probable Cause
The flight crew’s misperception of the distance required to safely pass the hangar and failure to request additional ground handling support while taxiing, which resulted in a collision with a hangar. Contributing to the accident was United Airlines Maintenance Ramp personnel’s ambiguous taxi instructions and lack of obstruction clearance guidance.
About This NTSB Record
This aviation event was investigated by the National Transportation Safety Board (NTSB). NTSB investigates all U.S. civil aviation accidents to determine probable cause and issue safety recommendations to prevent future accidents.