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An MD80 crew, concerned about wake turbulence of previously departed aircraft at ord, refused takeoff clearance.
| Attributes | |
| ACN | 531825 |
| Time | |
| Date | 200112 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ord.airport |
| State Reference | IL |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Controlling Facilities | tower : ord.tower |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : position and hold |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : ord.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 531825 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | inflight encounter : wake turbulence non adherence : clearance other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Facility ATC Human Performance Airport |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Departing runway 22R at ord. We were moved ahead of several aircraft to meet a release time of XB01Z. A company B757 was cleared to go before us and we were told to be ready. Aircraft were landing on runway 27L and I know ord tower had to time this well for departures. We were cleared for takeoff with the departing B757 just climbing out of 1500 ft on our TCAS. I declined takeoff clearance and was told that we might miss our release time. This was at XA59, two mins before our previously stated release time. I know the folks at ord are doing their best to keep things moving, however reducing stds just to make a release time just doesn't cut it. Safety first.
Original NASA ASRS Text
Title: AN MD80 CREW, CONCERNED ABOUT WAKE TURB OF PREVIOUSLY DEPARTED ACFT AT ORD, REFUSED TKOF CLRNC.
Narrative: DEPARTING RWY 22R AT ORD. WE WERE MOVED AHEAD OF SEVERAL ACFT TO MEET A RELEASE TIME OF XB01Z. A COMPANY B757 WAS CLRED TO GO BEFORE US AND WE WERE TOLD TO BE READY. ACFT WERE LNDG ON RWY 27L AND I KNOW ORD TWR HAD TO TIME THIS WELL FOR DEPS. WE WERE CLRED FOR TKOF WITH THE DEPARTING B757 JUST CLBING OUT OF 1500 FT ON OUR TCAS. I DECLINED TKOF CLRNC AND WAS TOLD THAT WE MIGHT MISS OUR RELEASE TIME. THIS WAS AT XA59, TWO MINS BEFORE OUR PREVIOUSLY STATED RELEASE TIME. I KNOW THE FOLKS AT ORD ARE DOING THEIR BEST TO KEEP THINGS MOVING, HOWEVER REDUCING STDS JUST TO MAKE A RELEASE TIME JUST DOESN'T CUT IT. SAFETY FIRST.
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.