What was found
BEFORE FLIGHT, THE CREW REPORTED A RT BLEED AIR PROBLEM, THEY CONSULTED WITH MECHANIC WHO INSTRUCTED THE CREW TO RUN THE ENGINES TO LET THE SYSTEM WARM UP. AFTER RUNNING THE ENGINES THE PROBLEM COULD NOT BE DUPLICATED. WITH NO FURTHER DISCREPANCIES NOTED THE AC WAS RETURNED TO SERVICE. SHORTLY AFTER TAKEOFF OF FLIGHT, THE CREW REPORTED A RT BLEED AIR PROBLEM, THEY CONSULTED WITH MECHANIC DISPATCH AND IT WAS DETERMINED THE AC NEEDED TO RETURN. THE CREW PERFORMED AN AIR-TURN-BACK. MECHANIC RAN THE ENGINES BUT WHERE UNABLE TO DUPLICATE THE PROBLEM. MECHANIC PERFORMED A LEAK CHECK OF THE EVA TUBING AND PURGED ANY MOISTURE. WITH NO FURTHER DISCREPANCIES NOTED THE AC WAS RETURNED TO SERVICE. (K)