Narrative:

We were repositioning from west side to east side of airport, holding at hotel 2, runway 16L. We received a crossing clearance 'cross runway 16L aircraft holding in position, hold short runway 17, monitor tower 118.3.' I read that back and we crossed. Got another clearance to cross runway 17 and contact ground 121.65. From ground we got taxi clearance to parking plus to our astonishment, a request to phone the tower. Apparently, upon calling, we heard we had illegally crossed the runway 16L on a clearance for another aircraft which was holding short at hotel 10. Another aircraft had just landed so he could cross the runway, however, was still in the rollout, so we couldn't cross yet. Although we did see lights in the distance, we figured it was the aircraft holding in position and since tower never reacted to our readback we weren't alarmed and just crossed. They listened to the tapes and couldn't find a trace of our readback, so either our radio failed momentarily or the other aircraft radio overpwred ours completely. In any case, nobody knew we were intending to cross and since we didn't hear anything negative after our readback, assumed we were doing the right thing by crossing the runway unaware of our mistake.

Related reports:

Google
 

Original NASA ASRS Text

Title: RPTR TOOK ANOTHER FLT'S CLRNC TO CROSS RWY 16L AND RWY 17. THERE WAS AN ACFT ON THE LNDG ROLL THE RPTR TAXIED IN FRONT OF. THE RPTR READ BACK THE CLRNC TO CROSS BUT THE READBACK DID NOT SHOW UP ON THE PLAYBACK OF THE TWR TAPE.

Narrative: WE WERE REPOSITIONING FROM W SIDE TO E SIDE OF ARPT, HOLDING AT HOTEL 2, RWY 16L. WE RECEIVED A XING CLRNC 'CROSS RWY 16L ACFT HOLDING IN POS, HOLD SHORT RWY 17, MONITOR TWR 118.3.' I READ THAT BACK AND WE CROSSED. GOT ANOTHER CLRNC TO CROSS RWY 17 AND CONTACT GND 121.65. FROM GND WE GOT TAXI CLRNC TO PARKING PLUS TO OUR ASTONISHMENT, A REQUEST TO PHONE THE TWR. APPARENTLY, UPON CALLING, WE HEARD WE HAD ILLEGALLY CROSSED THE RWY 16L ON A CLRNC FOR ANOTHER ACFT WHICH WAS HOLDING SHORT AT HOTEL 10. ANOTHER ACFT HAD JUST LANDED SO HE COULD CROSS THE RWY, HOWEVER, WAS STILL IN THE ROLLOUT, SO WE COULDN'T CROSS YET. ALTHOUGH WE DID SEE LIGHTS IN THE DISTANCE, WE FIGURED IT WAS THE ACFT HOLDING IN POS AND SINCE TWR NEVER REACTED TO OUR READBACK WE WEREN'T ALARMED AND JUST CROSSED. THEY LISTENED TO THE TAPES AND COULDN'T FIND A TRACE OF OUR READBACK, SO EITHER OUR RADIO FAILED MOMENTARILY OR THE OTHER ACFT RADIO OVERPWRED OURS COMPLETELY. IN ANY CASE, NOBODY KNEW WE WERE INTENDING TO CROSS AND SINCE WE DIDN'T HEAR ANYTHING NEGATIVE AFTER OUR READBACK, ASSUMED WE WERE DOING THE RIGHT THING BY XING THE RWY UNAWARE OF OUR MISTAKE.

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.