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ATCT local controller confusion caused reporters to be cleared across active runway as another aircraft was cleared for takeoff. Error was noticed and takeoff clearance cancelled.
| Attributes | |
| ACN | 109419 |
| Time | |
| Date | 198904 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dtw |
| State Reference | MI |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | ground other : taxi |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | ground : holding |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 16000 flight time type : 3000 |
| ASRS Report | 109419 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 140 flight time total : 6150 flight time type : 2100 |
| ASRS Report | 109661 |
| Events | |
| Anomaly | conflict : ground less severe incursion : runway |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance none taken : anomaly accepted |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 4000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Deviation |
Narrative:
Taxiing in after landing 21L were told to hold short of 21C at foxtrot; approaching 21C tower cleared us to cross 21C with an aircraft holding in position for takeoff. Prior to crossing 21C I asked copilot to confirm that we were cleared to cross and that aircraft in position was not rolling. After crossing 21C and contacting ground we were told to call tower after parking. Tower informed us that they thought they cleared us to cross,but were reviewing tapes as they had also cleared aircraft into position to takeoff. After reviewing tapes dtw tower confirmed that they had cleared us to cross and other aircraft to takeoff and that it was their error and would be on file. I do not remember tower clearing other aircraft for takeoff, though both the first officer and I discussed the fact that he was in position as we started across 21C. The only solution I can see is to slow the operation down slightly at this very busy and congested airport. The current safeguards did work though, and we kept adequate sep even if the controller technically made an error. Supplemental information from acn 109661: the aircraft taxiing directly in front of us was cleared to cross 21C. Shortly thereafter the local controller cleared us to cross 21C and informed us the aircraft on the runway was in position and hold. A phone conversation with tower indicated that they concurred with us the fact that we had been cleared to cross 21C, but that they had also cleared the aircraft on the runway for takeoff and then cancelled the takeoff. The aircraft was at least 4000' down the runway.
Original NASA ASRS Text
Title: ATCT LCL CTLR CONFUSION CAUSED REPORTERS TO BE CLEARED ACROSS ACTIVE RWY AS ANOTHER ACFT WAS CLEARED FOR TKOF. ERROR WAS NOTICED AND TKOF CLRNC CANCELLED.
Narrative: TAXIING IN AFTER LNDG 21L WERE TOLD TO HOLD SHORT OF 21C AT FOXTROT; APCHING 21C TWR CLRED US TO CROSS 21C WITH AN ACFT HOLDING IN POS FOR TKOF. PRIOR TO XING 21C I ASKED COPLT TO CONFIRM THAT WE WERE CLRED TO CROSS AND THAT ACFT IN POS WAS NOT ROLLING. AFTER XING 21C AND CONTACTING GND WE WERE TOLD TO CALL TWR AFTER PARKING. TWR INFORMED US THAT THEY THOUGHT THEY CLRED US TO CROSS,BUT WERE REVIEWING TAPES AS THEY HAD ALSO CLRED ACFT INTO POS TO TKOF. AFTER REVIEWING TAPES DTW TWR CONFIRMED THAT THEY HAD CLRED US TO CROSS AND OTHER ACFT TO TKOF AND THAT IT WAS THEIR ERROR AND WOULD BE ON FILE. I DO NOT REMEMBER TWR CLRING OTHER ACFT FOR TKOF, THOUGH BOTH THE F/O AND I DISCUSSED THE FACT THAT HE WAS IN POS AS WE STARTED ACROSS 21C. THE ONLY SOLUTION I CAN SEE IS TO SLOW THE OPERATION DOWN SLIGHTLY AT THIS VERY BUSY AND CONGESTED ARPT. THE CURRENT SAFEGUARDS DID WORK THOUGH, AND WE KEPT ADEQUATE SEP EVEN IF THE CTLR TECHNICALLY MADE AN ERROR. SUPPLEMENTAL INFO FROM ACN 109661: THE ACFT TAXIING DIRECTLY IN FRONT OF US WAS CLRED TO CROSS 21C. SHORTLY THEREAFTER THE LCL CTLR CLRED US TO CROSS 21C AND INFORMED US THE ACFT ON THE RWY WAS IN POS AND HOLD. A PHONE CONVERSATION WITH TWR INDICATED THAT THEY CONCURRED WITH US THE FACT THAT WE HAD BEEN CLRED TO CROSS 21C, BUT THAT THEY HAD ALSO CLRED THE ACFT ON THE RWY FOR TKOF AND THEN CANCELLED THE TKOF. THE ACFT WAS AT LEAST 4000' DOWN THE RWY.
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.