What was found
RIGHT WING DUMP VLV FAILED TO CLOSE AFTER DUMP TERMINATION. RIGHT FUEL DUMP VLV SYS WIRING CHECKED FROM RT FUEL DUMP VLV M1-89 TO FUEL SYS CONTROLLER. RT FUEL DUMP VLV TO FUEL SYS CONTROLLER, RT FUEL DUMP VLV TO 1, 2, 3 VIA CONTINUITY & INSULATION CHECKED NORMAL IAW WDM 28-31-02. R & R RT WING DUMP VLV. REMOVED AVIONIC COMPARTMENT LT SIDE COOLING RACK DUCT. INSTALLED AVIONICS COOLING DUCT IN FWD AV COMPARTMENT AS REQUIRED, OPERATIONS CHECK REQUIRED. R & R RT WING DUMP VLV. OPERATIONS CHECKED RT WING DUMP VLV IAW MM. DUMP VLV ACCESS PANEL INSTALLED & SEALED.