What was found
EMERGENCY LANDING, EICAS WOW SENSOR FAIL, GEAR LOCKED DOWN AFTER TAKEOFF. CREW RETUNED TO FIELD & AS A PRECAUTIONARY MEASURE DECLARED AN EMER. THE ACFT LANDED WITHOUT INCIDENT. ACCOMPLISHED AN ADJUSTMENT OF THE WOW SENSOR & A SATISFACTORY OPERATIONAL CHECK IAW FIM 32-61-00-810-840-A.