Narrative:

Crew understood we were cleared for 'position and hold.' we took the runway behind landing traffic waiting takeoff clearance. Tower instructed us to taxi clear, we thought for loss of room as landing aircraft rolled long. We taxied back and took off. 4 hours later after landing at sea we were advised that we were not cleared to go into position and hold. Factors: crew was late receiving weight data and was performing computations and checklists approaching runway. Controller (tower) was working 2 runway's and transmitting on both frequency's, crew was hearing calls to both runways. We were told via transcript to 'taxi up, hold short, be ready,' with other items and checklists going on the crew mistook this transcription to 'position and hold and be ready.' approaching our rollout at holdshort line from parallel taxiway we heard tower clear anther plane to land, and that a 'DC10 will be in position.' the 'be ready ' and 'DC10 in position'...task saturation at the time, transmissions/checklist interrupted contributed to this error. DC10 crews are international. 'Line up and wait, etc.'.

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Original NASA ASRS Text

Title: DC10 FLC TAXIED INTO POS AND HELD WHEN THEY WERE ONLY CLRED TO HOLD SHORT AND BE READY.

Narrative: CREW UNDERSTOOD WE WERE CLRED FOR 'POSITION AND HOLD.' WE TOOK THE RWY BEHIND LANDING TFC WAITING TKOF CLRNC. TOWER INSTRUCTED US TO TAXI CLEAR, WE THOUGHT FOR LOSS OF ROOM AS LNDG ACFT ROLLED LONG. WE TAXIED BACK AND TOOK OFF. 4 HOURS LATER AFTER LNDG AT SEA WE WERE ADVISED THAT WE WERE NOT CLRED TO GO INTO POS AND HOLD. FACTORS: CREW WAS LATE RECEIVING WEIGHT DATA AND WAS PERFORMING COMPUTATIONS AND CHKLISTS APCHING RWY. CTLR (TOWER) WAS WORKING 2 RWY'S AND TRANSMITTING ON BOTH FREQ'S, CREW WAS HEARING CALLS TO BOTH RWYS. WE WERE TOLD VIA TRANSCRIPT TO 'TAXI UP, HOLD SHORT, BE READY,' WITH OTHER ITEMS AND CHKLISTS GOING ON THE CREW MISTOOK THIS TRANSCRIPTION TO 'POS AND HOLD AND BE READY.' APCHING OUR ROLLOUT AT HOLDSHORT LINE FROM PARALLEL TXWY WE HEARD TOWER CLR ANTHER PLANE TO LAND, AND THAT A 'DC10 WILL BE IN POS.' THE 'BE READY ' AND 'DC10 IN POS'...TASK SATURATION AT THE TIME, TRANSMISSIONS/CHKLIST INTERRUPTED CONTRIBUTED TO THIS ERROR. DC10 CREWS ARE INTERNATIONAL. 'LINE UP AND WAIT, ETC.'.

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.