As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE BLEED INOP / (FAN AIR (PRECOOLER) CONTROL SYSTEMS. REMOVED AND REPLACED FAN AIR MODULATING VALVE IAW AMM 36-11-16 , PERFORMED OPERATIONAL TEST AND FAN AIR VALVE BITE TEST IAW AMM 36-11-16 NO FAULTS NOTED, THE SYSTEM WORKS NORMAL AT THIS TIME.