What was found
PHX- RETF - CREW REPORTED DURING CLIMB, RAISING THE GEAR CREW RECEIVED A RIGHT GEAR UNSAFE INDICATION CREW DECLARED AN EMERGENCY, BURNED OFF FUEL AND RETURNED TO PHX. THE LANDING WAS UNEVENTFUL. FUP 9809870 WAS ISSUED TO REPLACE CARD M986. MX REPLACED CARD M986. OPERATIONAL CHECK WAS GOOD. WITH THE LANDING GEAR LEVER IN THE "OFF" POSITION THE RIGHT MAIN LANDING GEAR RED AND GREEN LIGHTS ILLUMINATED. DUE TO HISTORY, ENGINEERING REQUESTED MX REPLACE THE RIGHT MLG UPLOCK ACTUATOR AND THE RIGHT MLG MODULE VALVE ASSEMBLY. MX REPLACED THE COMPONENTS. CREW PERFORMED A FUNCTIONAL CHECK FLIGHT. OPERATIONAL CHECK WAS GOOD. THE A/C WAS RETURNED TO SERVICE.