As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THIS IS A LEVEL"A" CHRONIC FOR AUTO FAIL LIGHT ILLUMINATED AND ALTN LIGHT ILLUMINATED. HAD SEVERAL LRU'S REPLACED DUE TO DECAY CHECK ISSUES. BITE FAULTED CPC1 OFV OR WIRING. CHANGED OUTFLOW VALVE AND TS WIRING TO OUTFLOW VALVE T/S IAW FIM 21-31 TASK 801. WIRING CHECKS GOOD, BETWEEN #1 PRESSURE CONTROLLER & CABIN PRESSURE. OUTFLOW VALVE CONNECTOR D10732. GNDS AT D10732 ALSO CK. GOOD, IAW SSM 21-31-22-101. R & R OUTFLOW VALVE IAW AMM 21-32-01, OPS CHECKED GOOD.