Narrative:

The tower issued the clearance of; 'runway 27; line up and wait.' after crossing the hold bar; the tower said the clearance was to hold short of runway 27. Both the captain and I are positive the original clearance was; 'runway 27; line up and wait'; and that was what I read back to the tower. The tower stated it was no problem and issued the takeoff clearance.

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Original NASA ASRS Text

Title: Air Carrier awaiting departure from SAN entered the runway after hearing 'line up and wait'; the clearance disputed by ATC.

Narrative: The Tower issued the clearance of; 'Runway 27; line up and wait.' After crossing the hold bar; the Tower said the clearance was to hold short of Runway 27. Both the Captain and I are positive the original clearance was; 'Runway 27; line up and wait'; and that was what I read back to the Tower. The Tower stated it was no problem and issued the takeoff clearance.

Data retrieved from NASA's ASRS site as of April 2012 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.