As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM - R PIMU MSG ON EICAS ECS MSG PAGE. BITE AT PIMU SHOWS CHANNEL A/B P5 LINE FAULT. FOUND P4.95 TUBE CHAFED WITH HOLE BEHIND TVC TUBE. R PIMU MSG CLEARED SEE LOG PAGE 159639 ITEM 48 GOT P 4.95 TUBE DISPOSITION. MSG CLEARED FIM 73-21-00 FIG 113. FAULT CODE 350-21.