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2 aircraft were cleared by ord tower to takeoff on runways 9L and 4L. The 2 aircraft started their takeoff roll almost simultaneously. Aircraft on runway 9 aborted takeoff and aircraft on runway 4 passed 250' in front.
| Attributes | |
| ACN | 109912 |
| Time | |
| Date | 198904 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ord |
| State Reference | IL |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : iah |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | climbout : takeoff |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Small Transport, Low Wing, 2 Recip Eng |
| Flight Phase | climbout : takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 6500 flight time type : 1500 |
| ASRS Report | 109912 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 8000 flight time type : 900 |
| ASRS Report | 109916 |
| Events | |
| Anomaly | conflict : ground critical other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Miss Distance | horizontal : 250 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Busy afternoon at ord. We were cleared for takeoff on 9L. At about 65-70 KTS and rapidly accelerating the copilot called out that the aircraft small transport Y on 4L was taking off and that it would be close at the intersection of 4L and 9L. I aborted my takeoff and the small transport Y zipped through the intersection 250' ahead of us. We taxied back and took off again on 9L with the tower giving us priority over all other departures. I really don't know what caused this incident. My best guess is this: busy rush hour at ord. This controller was very busy controling takeoffs on 3 runways; 4L, 9L, 32L, 32LX (T1). He was doing a good job and getting a lot of planes airborne and had a good rhythm going. I think maybe the small transport Y hesitated after he was cleared for takeoff and the controller did not break his rhythm enough to give us good enough sep at the intersection. I don't think a controller at a busy airport can safely control 3 runways so widely separated. His concentration has to be centered on 1 part of the airport, not in front and behind him.
Original NASA ASRS Text
Title: 2 ACFT WERE CLEARED BY ORD TWR TO TKOF ON RWYS 9L AND 4L. THE 2 ACFT STARTED THEIR TKOF ROLL ALMOST SIMULTANEOUSLY. ACFT ON RWY 9 ABORTED TKOF AND ACFT ON RWY 4 PASSED 250' IN FRONT.
Narrative: BUSY AFTERNOON AT ORD. WE WERE CLRED FOR TKOF ON 9L. AT ABOUT 65-70 KTS AND RAPIDLY ACCELERATING THE COPLT CALLED OUT THAT THE ACFT SMT Y ON 4L WAS TAKING OFF AND THAT IT WOULD BE CLOSE AT THE INTXN OF 4L AND 9L. I ABORTED MY TKOF AND THE SMT Y ZIPPED THROUGH THE INTXN 250' AHEAD OF US. WE TAXIED BACK AND TOOK OFF AGAIN ON 9L WITH THE TWR GIVING US PRIORITY OVER ALL OTHER DEPS. I REALLY DON'T KNOW WHAT CAUSED THIS INCIDENT. MY BEST GUESS IS THIS: BUSY RUSH HR AT ORD. THIS CTLR WAS VERY BUSY CTLING TKOFS ON 3 RWYS; 4L, 9L, 32L, 32LX (T1). HE WAS DOING A GOOD JOB AND GETTING A LOT OF PLANES AIRBORNE AND HAD A GOOD RHYTHM GOING. I THINK MAYBE THE SMT Y HESITATED AFTER HE WAS CLRED FOR TKOF AND THE CTLR DID NOT BREAK HIS RHYTHM ENOUGH TO GIVE US GOOD ENOUGH SEP AT THE INTXN. I DON'T THINK A CTLR AT A BUSY ARPT CAN SAFELY CTL 3 RWYS SO WIDELY SEPARATED. HIS CONCENTRATION HAS TO BE CENTERED ON 1 PART OF THE ARPT, NOT IN FRONT AND BEHIND HIM.
Data retrieved from NASA's ASRS site as of August 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.