What was found
AIRCRAFT WAS GROUNDED, AIRCRAFT RETURNED TO PHX DUE TO THE FLIGHT CREW REPORTING A DOOR RIGHT OVERWING EXIT MESSAGE DURING CLIMB OUT AT 9K-10K. THE AIRCRAFT LANDED AT PHX WHERE IT TAXIED TO THE GATE. MAINTENANCE FOUND THE MOUNTING BRACKET FOR PROXIMITY SENSOR 33WN2 WORN AFFECTING THE GAP BETWEEN THE SENSOR AND THE TARGET. MAINTENANCE REPLACED THE BRACKET AND ACCOMPLISHED A SATISFACTORY OPS CHECK OF THE RIGHT-HAND OVERWING DOOR INDICATION SYSTEM WITH NO ISSUES NOTED.