What was found
FLIGHT 633 EN-ROUTE, DURING CLIMB, CREW RECEIVED AN R REV ISLN VAL STATUS MSG. THE FLIGHT DECLARED AN EMER & RETURNED TO FIELD. THE FLIGHT LANDED WITHOUT FURTHER INCIDENT. METERED THROUGH THRUST REVERSER PRESS SWITCH S331, NO CONTINUITY & SWITCH CHECKED NORMAL. TROUBLE SHOT FURTHER TO RELAY K10713, 30 SECONDS AFTER STOW COMMAND RELAY RT, IN CONSTANT CLOSED POSITION. R & R RELAY K10713 IAW WDM 78-36-21. OPERATED RT THRUST REVERSER SEVERAL TIMES. NO DEFECTS ARE NOTED AT THIS TIME.