Narrative:

Air carrier X, JS41, holding short of runway 30L at taxiway B. Air carrier Y another jetstream maintenance, holding short of runway 30R at G taxiway. Another maintenance taxi aircraft also was holding short of runway 31. While awaiting north local to give me clearance to cross runway 30R and runway 31 with the air carrier Y, I was formulating my plan on all my crossings. When local gave me clearance to cross, I must have had just thought of air carrier X's plan on his crossing of runway 30L. I was intending to cross runway 30R and runway 31 with the air carrier Y I said 'air carrier X, cross runway 30R and runway 31 taxi to...' when I heard the readback, it took a second for the 'air carrier X' to sink in and then I realized the wrong aircraft was moving. As I started to tell him he took the wrong clearance. I noticed he was going out onto the runway and I told south local to cancel the departures takeoff clearance. I did not think I had said 'air carrier X', but review of the tape confirmed I had. Reviewing the scenario, I had gotten too far into planning and when it came to implementing, I did not use my pad to update my thoughts. Supplemental information from acn 518761: after landing on runway 30R at stl, I was told to hold short of 30L at taxiway bravo, which I did. Shortly thereafter, ground control said 'air carrier Y (which was our callsign) cross 30R' at which time I cleared visually and started across the runway. Once on the runway, ground informed us 'that clearance was not meant for us.' I cleared the runway and taxied to parking. Ground control got us mixed up with another aircraft at another intersection.

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Original NASA ASRS Text

Title: GND CTLR AT STL ISSUED RWY CROSSING INSTRUCTIONS TO WRONG ACFT.

Narrative: ACR X, JS41, HOLDING SHORT OF RWY 30L AT TXWY B. ACR Y ANOTHER JETSTREAM MAINT, HOLDING SHORT OF RWY 30R AT G TXWY. ANOTHER MAINT TAXI ACFT ALSO WAS HOLDING SHORT OF RWY 31. WHILE AWAITING N LOCAL TO GIVE ME CLRNC TO CROSS RWY 30R AND RWY 31 WITH THE ACR Y, I WAS FORMULATING MY PLAN ON ALL MY CROSSINGS. WHEN LCL GAVE ME CLRNC TO CROSS, I MUST HAVE HAD JUST THOUGHT OF ACR X'S PLAN ON HIS CROSSING OF RWY 30L. I WAS INTENDING TO CROSS RWY 30R AND RWY 31 WITH THE ACR Y I SAID 'ACR X, CROSS RWY 30R AND RWY 31 TAXI TO...' WHEN I HEARD THE READBACK, IT TOOK A SECOND FOR THE 'ACR X' TO SINK IN AND THEN I REALIZED THE WRONG ACFT WAS MOVING. AS I STARTED TO TELL HIM HE TOOK THE WRONG CLRNC. I NOTICED HE WAS GOING OUT ONTO THE RWY AND I TOLD S LOCAL TO CANCEL THE DEPARTURES TKOF CLRNC. I DID NOT THINK I HAD SAID 'ACR X', BUT REVIEW OF THE TAPE CONFIRMED I HAD. REVIEWING THE SCENARIO, I HAD GOTTEN TOO FAR INTO PLANNING AND WHEN IT CAME TO IMPLEMENTING, I DID NOT USE MY PAD TO UPDATE MY THOUGHTS. SUPPLEMENTAL INFO FROM ACN 518761: AFTER LNDG ON RWY 30R AT STL, I WAS TOLD TO HOLD SHORT OF 30L AT TXWY BRAVO, WHICH I DID. SHORTLY THEREAFTER, GND CTL SAID 'ACR Y (WHICH WAS OUR CALLSIGN) CROSS 30R' AT WHICH TIME I CLRED VISUALLY AND STARTED ACROSS THE RWY. ONCE ON THE RWY, GND INFORMED US 'THAT CLRNC WAS NOT MEANT FOR US.' I CLRED THE RWY AND TAXIED TO PARKING. GND CTL GOT US MIXED UP WITH ANOTHER ACFT AT ANOTHER INTXN.

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.