Narrative:

We were cleared for takeoff on runway 18L at mco. An mdt was landing on runway 18R as we received our takeoff clearance. The tower controller cleared the landing mdt to cross our runway just as we brought the throttles up. (First officer was making the takeoff.) when I heard the controller clear the mdt to cross our runway, I cleared the throttles and stopped the aircraft (which had just begun to move). I asked the tower to verify our takeoff clearance and he did not reply. He told the mdt to hold short of runway 17L, and when the mdt acknowledged, he reclred us for takeoff. We then took off. Obviously a controller error, but it occurred to us that, if the 2 runways had been using separate frequencys, we would have been denied the information we got from the partyline. This is an important consideration if someone tried to put datalink information xfer procedures in our towers.

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Original NASA ASRS Text

Title: ATCT LCL CTLR CLEARED AN ACFT FOR TKOF AND THEN CLEARED AN ACFT TO CROSS THAT RWY. ACFT TAKING OFF ABORTED.

Narrative: WE WERE CLRED FOR TKOF ON RWY 18L AT MCO. AN MDT WAS LNDG ON RWY 18R AS WE RECEIVED OUR TKOF CLRNC. THE TWR CTLR CLRED THE LNDG MDT TO CROSS OUR RWY JUST AS WE BROUGHT THE THROTTLES UP. (F/O WAS MAKING THE TKOF.) WHEN I HEARD THE CTLR CLR THE MDT TO CROSS OUR RWY, I CLRED THE THROTTLES AND STOPPED THE ACFT (WHICH HAD JUST BEGUN TO MOVE). I ASKED THE TWR TO VERIFY OUR TKOF CLRNC AND HE DID NOT REPLY. HE TOLD THE MDT TO HOLD SHORT OF RWY 17L, AND WHEN THE MDT ACKNOWLEDGED, HE RECLRED US FOR TKOF. WE THEN TOOK OFF. OBVIOUSLY A CTLR ERROR, BUT IT OCCURRED TO US THAT, IF THE 2 RWYS HAD BEEN USING SEPARATE FREQS, WE WOULD HAVE BEEN DENIED THE INFO WE GOT FROM THE PARTYLINE. THIS IS AN IMPORTANT CONSIDERATION IF SOMEONE TRIED TO PUT DATALINK INFO XFER PROCS IN OUR TWRS.

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.