As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 BLEED TRIP OFF LIGHT ILLUMINATED DESCENDING THROUGH 380. ACCOMPLISHED BLEED TRIP OFF CHECKLIST. LIGHT REMAINED ILLUMINATED. ACFT GROUNDED. ACCOMPLISHED T/C NG-36WC-00001. FOUND PCU VALVE & PRSOV FAILED. R & R PRECOOLER CONTROL VALVE REF AMM 36-12-02 OPS & LEAK CHECK GOOD. R & R NR 1 ENGINE PRSOV REF AMM 36-11-04 OPS AND LEAK CHECK GOOD. VERIFIED NR 1 ENGINE BLEED, OPS CK GOOD.