What was found
CREW REPORTED CLIMBING THROUGH 10,000, BLEED 2 LEAK MASTER WARNING. RAN QRH AND MSG DISAPPEARED AFTER 3 MINS. REPOSITION FLIGHT, SO NEVER CLIMBED ABOVE 12,000. CAB ALT REMAINED AT 800 AT ITS HIGHEST, ON SCHEDULE. NO OTHER ISSUES AND CONTINUED THE REPOSITION. CORR ACTION- MX TROUBLESHOT TO BAD THERMAL SWITCH AND REMOVED AND REPLACED THERMAL SWITCH IN RH PYLON NEXT BLEED 2 VALVE. PERFORMED THERMAL SWITCH OPS CHECK. CHECK GOOD.