B757-200 CREW HAD TRACK DEV IN SKBO CLASS E AIRSPACE.

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WRONG DATA INPUT TO FMC. THIS RPT IS BEING SUBMITTED AT THE REQUEST OF THE UNION COORDINATOR TO SUBSTANTIATE THE FO'S RPT. DURING DSCNT INTO BOGATA; I HAD TO LEAVE THE COCKPIT TO USE THE LAVATORY. WE WERE APCHING THE MQU VOR AT ABOUT FL250; AND I WAS BACK QUICKLY. AFTER I RETURNED TO MY SEAT; I SAW THAT THE FMC WAS COMMANDING A TURN TO THE R IN A NW DIRECTION. WE WERE ABOUT 16000 FT. I ASKED THE FO 'WHAT'S UP?' AND SHE REPLIED THAT WE HAD 'BEEN CLRED DIRECT TO UTICA.' I IMMEDIATELY SELECTED HDG MODE; AND TURNED THE ACFT TO THE L WHERE I KNEW THE UTI NDB WAS LOCATED. WE WERE JUST XING THE MQU VOR AT THIS TIME AT ABOUT 16000 FT. ABOUT THIS SAME TIME; AS I FINISHED STRAPPING IN; THE CTLR THEN CLRED US TO THE BOG VOR. AS WE SET UP TO PROCEED TO THE BOG VOR; I ASKED THE FO IF SHE REALIZED WHAT HAD HAPPENED. SHE REPLIED THAT SHE HAD TYPED IN 'UTICA' INTO THE FMC INSTEAD OF 'UTI.' I COULD SEE THAT SHE REALIZED THE SERIOUSNESS OF THAT MISTAKE; AND WE DISCUSSED THE POTENTIAL CONSEQUENCES. THE APCH AND LNDG WERE UNEVENTFUL.