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ATCT local controller cleared B737 for takeoff on intersecting runway before legal separation occurred with DC10 already cleared for takeoff from other intersecting runway. Situational awareness not maintained.
| Attributes | |
| ACN | 397297 |
| Time | |
| Date | 199803 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : las |
| State Reference | NV |
| 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 | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : takeoff |
| Route In Use | departure other departure sid : sid |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | climbout : takeoff |
| Route In Use | departure other departure sid : sid |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar |
| Experience | controller non radar : 4 controller radar : 3 flight time total : 3752 |
| ASRS Report | 397297 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : ground critical non adherence : published procedure |
| Independent Detector | other controllera |
| Resolutory Action | none taken : insufficient time |
| Consequence | Other |
| Miss Distance | horizontal : 1200 vertical : 300 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
We have crossing runways at las ATCT. (2 controllers.) I was working runway 19L/right. The other controller was working runway 25L/right. I was going to get the intersection after the DC10 departed runway 25R. I taxied the B737 into position and hold on runway 19R (for the traffic). With the memory aid I use, I offset ('cock') the flight strip (which means to me the aircraft is into position and hold). Next thing I know the B737 is rolling down the runway. The B737 went through the intersection before the DC10. After checking the tapes, the B737 was cleared for takeoff.
Original NASA ASRS Text
Title: ATCT LCL CTLR CLRED B737 FOR TKOF ON INTERSECTING RWY BEFORE LEGAL SEPARATION OCCURRED WITH DC10 ALREADY CLRED FOR TKOF FROM OTHER INTERSECTING RWY. SITUATIONAL AWARENESS NOT MAINTAINED.
Narrative: WE HAVE XING RWYS AT LAS ATCT. (2 CTLRS.) I WAS WORKING RWY 19L/R. THE OTHER CTLR WAS WORKING RWY 25L/R. I WAS GOING TO GET THE INTXN AFTER THE DC10 DEPARTED RWY 25R. I TAXIED THE B737 INTO POS AND HOLD ON RWY 19R (FOR THE TFC). WITH THE MEMORY AID I USE, I OFFSET ('COCK') THE FLT STRIP (WHICH MEANS TO ME THE ACFT IS INTO POS AND HOLD). NEXT THING I KNOW THE B737 IS ROLLING DOWN THE RWY. THE B737 WENT THROUGH THE INTXN BEFORE THE DC10. AFTER CHKING THE TAPES, THE B737 WAS CLRED FOR TKOF.
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.