As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT BLEED TRIP OFF LIGHT ILLUMINATED FOLLOWING A BLEEDS OFF TAKEOFF FROM LAS THE LIGHT ILLUMINATED APPROXIMATELY 60 SECS AFTER RE-ESTABLISHING THE BLEEDS ON BOTH ENGINES. BLEED RE-ESTABLISHED WITH TRIP RESET PER QRH. PRECOOLER CNTL VLV PASSED HEALTH CHECK. ACCOMPLISHED BLEED AIR CROSSOVER OPS TEST OPS NORMAL. PERFORMED BLEED AIR REG PRSOV 450 DEGREE CHECK. PRECOOLER CNTL VLV FAILED TO OPEN FULLY BEFORE CONTROL PRESSURE REACHED 3PSIG. REPLACED PRECOOLER CONTROL VALVE.