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Air carrier X and air carrier Y both cleared for takeoff on multiple runway operation intersecting runways. System error.
| Attributes | |
| ACN | 188644 |
| Time | |
| Date | 199109 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : ord |
| State Reference | IL |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : mkg |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : takeoff other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | climbout : takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 240 flight time total : 3500 flight time type : 1200 |
| ASRS Report | 188644 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : ground less severe non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : rejected takeoff |
| Consequence | Other |
| Miss Distance | horizontal : 1000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X had been cleared for takeoff on runway 9L at ord at night. The captain was flying and he had pwred up for takeoff when he heard air carrier Y on runway 4L say, 'I thought we were cleared for takeoff.' the captain chopped the power and set the brakes (we had just started to roll). By this time ord tower had figured out their mistake and called us to cancel our takeoff clearance. We acknowledged and took off a min or so later after air carrier Y.
Original NASA ASRS Text
Title: ACR X AND ACR Y BOTH CLRED FOR TKOF ON MULTIPLE RWY OP INTERSECTING RWYS. SYS ERROR.
Narrative: ACR X HAD BEEN CLRED FOR TKOF ON RWY 9L AT ORD AT NIGHT. THE CAPT WAS FLYING AND HE HAD PWRED UP FOR TKOF WHEN HE HEARD ACR Y ON RWY 4L SAY, 'I THOUGHT WE WERE CLRED FOR TKOF.' THE CAPT CHOPPED THE PWR AND SET THE BRAKES (WE HAD JUST STARTED TO ROLL). BY THIS TIME ORD TWR HAD FIGURED OUT THEIR MISTAKE AND CALLED US TO CANCEL OUR TKOF CLRNC. WE ACKNOWLEDGED AND TOOK OFF A MIN OR SO LATER AFTER ACR Y.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.