CRJ200. THE DISPATCHER AND MAINT CTLR ISSUED A FERRY FLT TO THE CREW; BECAUSE OF A BIRD STRIKE. AFTER AIRBORNE; THE CREW FOUND ONLY THE STANDBY INSTS WORKED.

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I RECEIVED A FERRY FLT PERMIT FROM MAINT CTL AT APPROX XA30. TO THE BEST OF MY RECOLLECTION THE PERMIT STATED THE FERRY WAS DUE TO A BIRD STRIKE TO THE #2 PITOT TUBE. IN THE CONDITION SECTION I BELIEVE IT SAID TO USE AIR DATA FROM THE STANDBY SYS. DISPATCH PROC FOR A FERRY FLT IS TO READ THE PERMIT AND MAKE SURE THAT THE FLT WILL MEET ANY WX RESTRS OR FLT PLANNING RESTRS PROVIDED. DISPATCH BASICALLY PROVIDES A FLT PLAN AND WX SVC FOR THE CREW SINCE IT IS PART 91. I WORKED UP THE FLT PLAN; FAXED THE PERMIT TO ZZZ OPS AND EXPECTED THE FLT TO BE ON ITS WAY. I HAD NO IDEA THAT THE CREW WAS ONLY GOING TO NAVIGATE BY USE OF STANDBY INSTS ONLY. IT WAS LED TO BELIEVE THAT THE FLT WAS A STANDARD FERRY. THE CAPT CALLED DISPATCH BEFORE DEP FOR A WX BRIEF AND THE FLT WAS SCHEDULED. AFTER ABOUT 150 MI FROM DEP; THE CAPT CALLED DISPATCH; I WAS AWAY FROM MY DESK AND A FELLOW DISPATCHER TOOK THE CALL FROM ACR RADIO. WHEN I CAME BACK IN THE OFFICE THE DISPATCHER TOLD ME THAT THE CREW WAS HAVING A PROB WITH THEIR INSTS AND COULD NOT VERIFY THEIR FLT LEVEL; DIRECTION; ETC. 2 F16'S WERE IN THE AREA AND ASSISTED THEM AFTER HEARING THE CREW'S CONVERSATION WITH ZZZZ CTR. THE F16'S WERE ABLE TO CONFIRM THAT THE CREW'S STANDBY INSTS WERE CORRECT GIVING THEM AN ACCURATE FLT LEVEL; HDG AND AIRSPD. ON THE ACFT SITUATIONAL DISPLAY WE WERE ABLE TO TRACK THE FLTS PATH TO SEE THAT HE HAD FLOWN OFF PATH; WHICH THE CAPT EXPLAINED HE HAD DONE SO TO KEEP CLR OF CLOUDS AND FOLLOW UP THE COAST. WHEN THE CAPT CALLED DISPATCH AND MAINT HE HAD ALSO REQUESTED WX FOR THE NEAREST SUITABLE ARPT. AFTER LOOKING AT THE WX IT WAS DETERMINED THAT THE DEST ARPT ACTUALLY HAD THE BEST WX AND HE WAS GOING TO PROCEED TO ZZZ1. I KEPT MAINT POSTED ON THE FLT AND ETA. WHEN I THOUGHT THEY WERE ON APCH I CALLED ZZZ1 STATION TO SEE IF THEY WERE ON THE GND. WHILE ON THE PHONE WITH THE STATION; THE CAPT CALLED ON THE RADIO IN THE BACKGROUND; THE STATION INFORMED THE CAPT THAT SHE WAS ON THE PHONE WITH DISPATCH AND HE TOLD HER TO RPT THAT THEY WERE SAFELY ON THE GND WITH NO INCIDENTS. I REPEATED HIS STATEMENT TO THE STATION FOR CONFIRMATION; TOOK HIS ON AND IN TIMES AND RPTED THE TIMES AND COMMENT TO MAINT. COMPANY EMPLOYEES INFORMED MAINT THAT THE CREW HAD DECLARED AN EMER ON APCH DUE TO LOSS OF AHRS. I PERSONALLY THOUGHT THIS SIT COULD HAVE BEEN PREVENTED WITH MORE COM BTWN THE DIFFERENT PARTIES INVOLVED.