Narrative:

We were given a clearance to cross runway 28L and hold short of runway 28R. Captain started to taxi, and the ACARS requested a delay report. I diverted my attention to the ACARS, sent the report, then looked up. We were just coming to rest in position on runway 28R. Had I not had my attention diverted completely to the ACARS, I would have caught the captain's mistake before we crossed the line. The captain said he understood the clearance to be, cross runway 28L and hold on runway 28R.

Google
 

Original NASA ASRS Text

Title: ACR TAXIED INTO POS ON THE RWY, INSTEAD OF HOLDING SHORT, AS CLRED. UNAUTH RWY ENTRY.

Narrative: WE WERE GIVEN A CLRNC TO CROSS RWY 28L AND HOLD SHORT OF RWY 28R. CAPT STARTED TO TAXI, AND THE ACARS REQUESTED A DELAY RPT. I DIVERTED MY ATTN TO THE ACARS, SENT THE RPT, THEN LOOKED UP. WE WERE JUST COMING TO REST IN POS ON RWY 28R. HAD I NOT HAD MY ATTN DIVERTED COMPLETELY TO THE ACARS, I WOULD HAVE CAUGHT THE CAPT'S MISTAKE BEFORE WE CROSSED THE LINE. THE CAPT SAID HE UNDERSTOOD THE CLRNC TO BE, CROSS RWY 28L AND HOLD ON RWY 28R.

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.