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B757 flight crew is questioned by ATC at las for taxiing into position resulting from an apparent call sign confusion.
| Attributes | |
| ACN | 630985 |
| Time | |
| Date | 200409 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : las.airport |
| State Reference | NV |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : position and hold ground : taxi |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : las.tower |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : position and hold |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 23000 flight time type : 2500 |
| ASRS Report | 630985 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : multi engine pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 184 flight time total : 17000 flight time type : 287 |
| ASRS Report | 631158 |
| Events | |
| Anomaly | incursion : runway non adherence : clearance |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Taxiing out for takeoff. Tower controller stated 'air carrier Z will be departing from taxiway B1. After him, taxi into position and hold, full length.' both myself and the first officer verbalized the clearance, and it was read back to the controller. When we looked at the runway, we observed air carrier Z, at the end of the runway, not at the B1 intersection. I told the first officer, 'no big deal, when he leaves, we will taxi into position.' (we thought he must have back-taxied from B1 intersection.) when air carrier Z departed, we taxied into position. When turning to align with the runway, we saw an air carrier Y B737 taxiing into position at the B1 intersection in front of us. Tower called us and said we did not have clearance to go into position. When I got to phl, I called the tower supervisor on duty in las. He said that he listened to the tapes and that I did not have clearance to taxi into position. He said no action would be taken on their part. My first officer and myself still believe we heard the clearance. We definitely heard 'air carrier Z,' and never heard 'air carrier Y' call sign.
Original NASA ASRS Text
Title: B757 FLT CREW IS QUESTIONED BY ATC AT LAS FOR TAXIING INTO POS RESULTING FROM AN APPARENT CALL SIGN CONFUSION.
Narrative: TAXIING OUT FOR TKOF. TWR CTLR STATED 'ACR Z WILL BE DEPARTING FROM TXWY B1. AFTER HIM, TAXI INTO POS AND HOLD, FULL LENGTH.' BOTH MYSELF AND THE FO VERBALIZED THE CLRNC, AND IT WAS READ BACK TO THE CTLR. WHEN WE LOOKED AT THE RWY, WE OBSERVED ACR Z, AT THE END OF THE RWY, NOT AT THE B1 INTXN. I TOLD THE FO, 'NO BIG DEAL, WHEN HE LEAVES, WE WILL TAXI INTO POS.' (WE THOUGHT HE MUST HAVE BACK-TAXIED FROM B1 INTXN.) WHEN ACR Z DEPARTED, WE TAXIED INTO POS. WHEN TURNING TO ALIGN WITH THE RWY, WE SAW AN ACR Y B737 TAXIING INTO POS AT THE B1 INTXN IN FRONT OF US. TWR CALLED US AND SAID WE DID NOT HAVE CLRNC TO GO INTO POS. WHEN I GOT TO PHL, I CALLED THE TWR SUPVR ON DUTY IN LAS. HE SAID THAT HE LISTENED TO THE TAPES AND THAT I DID NOT HAVE CLRNC TO TAXI INTO POS. HE SAID NO ACTION WOULD BE TAKEN ON THEIR PART. MY FO AND MYSELF STILL BELIEVE WE HEARD THE CLRNC. WE DEFINITELY HEARD 'ACR Z,' AND NEVER HEARD 'ACR Y' CALL SIGN.
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.