Narrative:

We had just landed on runway 31C. (Runways 31L, 31C and 31R were in use.) we missed taxiway Y and made a left turn on runway 4R/22L. PNF immediately advised the tower. We missed txwys Y and V when the tower responded. They advised to continue to the end of runway 4R, which we did. We were never asked to call the tower. As we taxied in, we heard a commercial carrier having a similar problem. We studied the airport diagram prior to landing and read the 'hot spots.' our plan was to exit at taxiway a, which was the second taxiway turnoff. With no marking to indicate the crossing runway, I guess runway 4R looked like a taxiway. Then, being slightly disoriented initially and concerned about clearing the runway quickly, we missed taxiway K. We restudied the diagram again, and will do so twice before landing at midway in the future.

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Original NASA ASRS Text

Title: RWY INCURSION WHEN THE PIC OF A BEECH JET TURNS ONTO RWY 4R THINKING IT IS TXWY A AT MDW, IL.

Narrative: WE HAD JUST LANDED ON RWY 31C. (RWYS 31L, 31C AND 31R WERE IN USE.) WE MISSED TXWY Y AND MADE A L TURN ON RWY 4R/22L. PNF IMMEDIATELY ADVISED THE TWR. WE MISSED TXWYS Y AND V WHEN THE TWR RESPONDED. THEY ADVISED TO CONTINUE TO THE END OF RWY 4R, WHICH WE DID. WE WERE NEVER ASKED TO CALL THE TWR. AS WE TAXIED IN, WE HEARD A COMMERCIAL CARRIER HAVING A SIMILAR PROB. WE STUDIED THE ARPT DIAGRAM PRIOR TO LNDG AND READ THE 'HOT SPOTS.' OUR PLAN WAS TO EXIT AT TXWY A, WHICH WAS THE SECOND TXWY TURNOFF. WITH NO MARKING TO INDICATE THE XING RWY, I GUESS RWY 4R LOOKED LIKE A TXWY. THEN, BEING SLIGHTLY DISORIENTED INITIALLY AND CONCERNED ABOUT CLRING THE RWY QUICKLY, WE MISSED TXWY K. WE RESTUDIED THE DIAGRAM AGAIN, AND WILL DO SO TWICE BEFORE LNDG AT MIDWAY IN THE FUTURE.

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.