As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHX - AIR TURNBACK - 6/10/01 - FLT 234 - DURING LEVEL OFF AT FL 370, NR 2 BLEED FAULTED W/ ECAM MSG; PER THE FCOM CREW TURNED OFF BLEED SWITCH AND DUE TO ICING CONDITIONS EN ROUTE TO DTW, THE A/C RETURNED TO PHX; IN PHX THE NR 2 BLEED AIR SYS WAS PLACED ON MEL 36-11-01 AND ROUTED ON A FLIGHT THAT DIDN'T REQUIRE ITS USE; PAX WERE ACCOMMODATED ON ANOTHER A/C & THE FLIGHT CONTINUED TO DTW. MX TROUBLESHOT AND FOUND BLEED PRESSURE WOULD FLUCTUATE WHEN POWER WAS PULLED BACK; NR 2 HIGH PRESSURE BLEED VALVE WAS REPLACED AND FUNCTIONAL CHECKS NORMAL; MEL CLEARED.