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An A319 understood lax local controller to say position and hold runway 24R. The crew was performing the takeoff checklist and misunderstood. Aircraft on final given go around.
| Attributes | |
| ACN | 808651 |
| Time | |
| Date | 200810 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : lax.airport |
| State Reference | CA |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : taxi ground : holding |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 808651 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : local |
| Events | |
| Anomaly | conflict : ground less severe incursion : runway non adherence : clearance |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : issued alert controller : issued new clearance flight crew : executed go around |
| Supplementary | |
| Problem Areas | ATC Human Performance Airport Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Taxi for takeoff runway 24R flight lax-ZZZ hold short taxiway V. Stopped short of taxiway V we were not ready yet starting #1 and loading FMC. Tower told us to move up closer to taxiway V and we did. As we were finishing checklist we heard; 'air carrier 1234; taxi position and hold to wait for takeoff I need that taxiway.' as we pulled up nose just over hold short line; we observed an aircraft on 3/4 mi final; we stopped as tower told us also to stop. Tower sent the aircraft on final around. Lax tower was trying to tell us something; but due to us being in checklist we heard a clearance to position and hold. We acknowledged the position and hold but got no correction from tower until the hold short call as we started to cross the hold short line. Confusing instructions/statements from lax tower in a high workload situation was taken as a clearance by us and not corrected by tower. Confusing clearance; acknowledge and not corrected in a high workload situation. Acknowledge nothing until we are ready.
Original NASA ASRS Text
Title: AN A319 UNDERSTOOD LAX LCL CTLR TO SAY POSITION AND HOLD RWY 24R. THE CREW WAS PERFORMING THE TKOF CHKLIST AND MISUNDERSTOOD. ACFT ON FINAL GIVEN GAR.
Narrative: TAXI FOR TAKEOFF RWY 24R FLT LAX-ZZZ HOLD SHORT TXWY V. STOPPED SHORT OF TXWY V WE WERE NOT READY YET STARTING #1 AND LOADING FMC. TWR TOLD US TO MOVE UP CLOSER TO TXWY V AND WE DID. AS WE WERE FINISHING CHECKLIST WE HEARD; 'ACR 1234; TAXI POSITION AND HOLD TO WAIT FOR TAKEOFF I NEED THAT TAXIWAY.' AS WE PULLED UP NOSE JUST OVER HOLD SHORT LINE; WE OBSERVED AN ACFT ON 3/4 MI FINAL; WE STOPPED AS TOWER TOLD US ALSO TO STOP. TWR SENT THE ACFT ON FINAL AROUND. LAX TWR WAS TRYING TO TELL US SOMETHING; BUT DUE TO US BEING IN CHECKLIST WE HEARD A CLEARANCE TO POSITION AND HOLD. WE ACKNOWLEDGED THE POSITION AND HOLD BUT GOT NO CORRECTION FROM TWR UNTIL THE HOLD SHORT CALL AS WE STARTED TO CROSS THE HOLD SHORT LINE. CONFUSING INSTRUCTIONS/STATEMENTS FROM LAX TWR IN A HIGH WORKLOAD SITUATION WAS TAKEN AS A CLEARANCE BY US AND NOT CORRECTED BY TWR. CONFUSING CLEARANCE; ACKNOWLEDGE AND NOT CORRECTED IN A HIGH WORKLOAD SITUATION. ACKNOWLEDGE NOTHING UNTIL WE ARE READY.
Data retrieved from NASA's ASRS site as of May 2009 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.