B757 EDDF TO KDTW; HAD FMC INOP. REGS REQUIRE ROUTING OVER CONTINGENCY RTES IN THE NORTH ATLANTIC MNPS AIRSPACE. FLT WAS PLANNED OVER NORMAL ROUTING. DISPATCHER FELT SINCE PLANNED ROUTING WAS WITHIN 60 MINS OF A SUITABLE ARPT HE DID NOT NEED TO REVISE IT. ACFT FLC WAS NOT INFORMED OF THE ERROR. DISPATCHER GIVEN REMEDIAL TRAINING.

Narrative

ACR FLT EDDF TO KDTW; WAS DISPATCHED INCORRECTLY. THE FLT WAS CONDUCTED BY A B757 (EXTENDED TWIN CERTIFIED). AT THE TIME OF THE FLT; ONE OF THE FMC'S WAS KNOWN TO BE INOP. WITH AN FMC INOP; THE ACFT IS RESTR TO THE CONTINGENCY RTES IN NORTH ATLANTIC MNPS AIRSPACE. THIS RESTR WAS KNOWN MANY HRS IN ADVANCE OF THE FLT. I BRIEFED THE DISPATCHER FOR THE FLT THAT THE FLT NEEDS TO BE PLANNED ON THE NORTH ATLANTIC CONTINGENCY RTE SINCE ONLY 1 FMC WAS AVAILABLE FOR NAV. THE FLT DEPARTED BEFORE I REALIZED IT WAS NOT PLANNED ON A CONTINGENCY RTE. I ADVISED THE DISPATCHER OF THE MISTAKE; BUT FAILED TO ENSURE THAT HE PHONE PATCH THE ACFT AND REVISE THE RTE. THE DISPATCHER FELT THAT SINCE THE ACFT WAS PLANNED WITHIN 60 MINS OF A SUITABLE ARPT (FAR 121.161) HE DID NOT NEED TO REVISE IT. THE DISPATCHER WAS GIVEN REMEDIAL NORTH ATLANTIC TRAINING. I WILL FOLLOW SPECIAL OPS FLTS AND RESTRICTIVE FLTS CLOSELY. ALSO; I WILL NOT ASSUME A DISPATCHER FULLY UNDERSTANDS RESTRICTIVE ITEMS WITHOUT GIVING A THOROUGH BRIEFING.