What was found
**EMERGENCY DECLARED**'FLAPS PRIMARY' CAUTION EICAS AND 'TE FLAPS' STATUS MESSAGES UPON FLAP EXTENSION FROM 1 TO 5 DURING LANDING CONFIGURATION. FLAPS EXTENDED TO 25 IN SECONDARY MODE. FOUND CMC MSG 27776,VISUAL CHK ALL FLAP SYS,NO DAMAGE NOTED, PERFORMED OPC FLAP SYS WITH PRIMARY WORKING PROPERLY AT THIS TIME, CMC GRD TEST OF ALL FCU,PASSED.REPLACED RELAY R 7633 (EXTEND DRIVE) FOR THE PRECAUTIONALLY PER WDM 27-51-11,NO FAULTS IN PLF AND EXISTING FAULT,A/C OK TO CONTINUE SVC.