Narrative:

At mdw while taxiing from the end of concourse B (our parking spot) to runway 31C via txwys P and G, we apparently crossed runway 31R without clearance. After we crossed it, ground told us that we were supposed to have held short of runway 31R, but 'no problem this time.' how did this happen? All I remember hearing them tell us was to taxi to runway 31C via txwys P and G. The tower xmissions at mdw are of a less than clear quality. They always sound like they are in an echo chamber. Also, on the inbound ATIS, I remember hearing that runway 31R and runway 31L were closed, so perhaps I didn't pay close attention to the taxi instructions because I assumed the other runways were closed. Of course, we were also running our checklists and listening to ground at the same time. Further, I was rushing, we were a tad late and an aircraft speed restr would cause us to be later yet. And last, but not least, this was the last leg of basically a 5 day trip for me (a 2 day trip, followed immediately by a 3 day). Over the 5 days, I flew 23 legs, 26.5 hours, encountered numerous frustrations due to WX and maintenance/mechanical problems. I was probably more fatigued than I realized. Lesson learned: slow down, don't rush, confirm runway xings!

Related reports:

Google
 

Original NASA ASRS Text

Title: CAPT OF AN LTT FAILED TO HOLD SHORT OF A RWY DURING TAXI FOR TKOF.

Narrative: AT MDW WHILE TAXIING FROM THE END OF CONCOURSE B (OUR PARKING SPOT) TO RWY 31C VIA TXWYS P AND G, WE APPARENTLY CROSSED RWY 31R WITHOUT CLRNC. AFTER WE CROSSED IT, GND TOLD US THAT WE WERE SUPPOSED TO HAVE HELD SHORT OF RWY 31R, BUT 'NO PROB THIS TIME.' HOW DID THIS HAPPEN? ALL I REMEMBER HEARING THEM TELL US WAS TO TAXI TO RWY 31C VIA TXWYS P AND G. THE TWR XMISSIONS AT MDW ARE OF A LESS THAN CLEAR QUALITY. THEY ALWAYS SOUND LIKE THEY ARE IN AN ECHO CHAMBER. ALSO, ON THE INBOUND ATIS, I REMEMBER HEARING THAT RWY 31R AND RWY 31L WERE CLOSED, SO PERHAPS I DIDN'T PAY CLOSE ATTN TO THE TAXI INSTRUCTIONS BECAUSE I ASSUMED THE OTHER RWYS WERE CLOSED. OF COURSE, WE WERE ALSO RUNNING OUR CHKLISTS AND LISTENING TO GND AT THE SAME TIME. FURTHER, I WAS RUSHING, WE WERE A TAD LATE AND AN ACFT SPD RESTR WOULD CAUSE US TO BE LATER YET. AND LAST, BUT NOT LEAST, THIS WAS THE LAST LEG OF BASICALLY A 5 DAY TRIP FOR ME (A 2 DAY TRIP, FOLLOWED IMMEDIATELY BY A 3 DAY). OVER THE 5 DAYS, I FLEW 23 LEGS, 26.5 HRS, ENCOUNTERED NUMEROUS FRUSTRATIONS DUE TO WX AND MAINT/MECHANICAL PROBS. I WAS PROBABLY MORE FATIGUED THAN I REALIZED. LESSON LEARNED: SLOW DOWN, DON'T RUSH, CONFIRM RWY XINGS!

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.