B767-300 EICAS INDICATED 'LE SLAT ASYMMETRY' WHILE ON APCH. FLT CREW EXECUTED GAR FOR COMPLETING CHECKLIST PROCEDURES AND RETURNED FOR LNDG.

Narrative

EVERYTHING WAS NORMAL UNTIL 5 MI FINAL ON APCH TO LNDG. THE FO (RECEIVING A REQUALIFICATION OE) CALLED FOR FLAPS 30 DEGS; THE PLANNED LNDG CONFIGN. THE CAPT LIFTED THE FLAP HANDLE FROM THE FLAP 25 DEG DETENT AND SELECTED FLAPS 30 DEGS. AN AMBER EICAS MESSAGE (LEADING EDGE SLAT ASYMMETRY) APPEARED ACCOMPANIED BY THE MASTER CAUTION LIGHT; CHIME; AND ILLUMINATION OF THE AMBER LEADING EDGE LIGHT ON THE FORWARD INST PANEL. THE FLT CREW COORDINATED A GAR IN VISUAL CONDITIONS WITH TWR; FOLLOWED BY RADAR VECTORS S OF THE ARPT AND RWY 10 APCH. FUEL ON BOARD ALLOWED 1 HR AND 30 MINS ENDURANCE. WX WAS VMC. WE ACARS'D DISPATCH AND MAINT AND WE ADVISED THE PURSER AND THEN THE PAX OF THE REASON FOR OUR GAR AND THE EXPECTATION OF AN UNEVENTFUL; ROUTINE LNDG AFTER WE WILL HAVE COMPLETED THE APPROPRIATE CHKLIST PROCS. THE FO FLEW THE ACFT AND HANDLED ATC WHILE THE CAPT SPOKE WITH DISPATCH. WE HAD A FULL ACFT; INCLUDING 2 OFFLINE REGIONAL AIRLINE PLTS. WE HAD THE PURSER CALL A B767 CAPT WHO WAS RIDING IN THE CABIN TO VISUALLY INSPECT THE LEADING EDGE SLATS AND THEN TO COME FORWARD TO TRADE SEATS WITH ONE OF THE OFFLINE PLTS IN ORDER TO ASSIST THE FLT CREW WITH THE CHKLIST. DISPATCH COULD NOT CONTACT MAINT DESPITE REPEATED ATTEMPTS. AFTER HAVING COMPLETED THE APPROPRIATE FLT MANUAL PROC WITH EVERYONE'S CONCURRENCE; CTL OF THE ACFT WAS XFERRED FROM THE FO TO THE CAPT TO FLY THE APCH AND LNDG; WHICH WERE UNEVENTFUL. WE TAXIED TO THE GATE LEAVING THE FLAPS AND SLATS IN THE LNDG POS FOR MAINT TO INSPECT.