As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 BLEED FAILED WITH NR 1 BLEED ON MEL. CABIN TEMPERATURE FLUCTUATING. TROUBLESHOT IAW FIM REF 36-11-00-810-810-A. FOUND NR 2 ENGINE NAPRSOV BUTTERFLY VALVE SEAL DETONATED AND NOT HOLDING PRESSURE. R & R ENGINE NAPRSOV, OK FOR SERVICE.