As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, PASSING FL 340, DUCT PRESSURE SPLIT EXCEEDING 20. RIGHT DUCT PRESSURE 25, LEFT 49. BOTH ENGINES AT 100 PERCENT N1. ACFT GROUNDED. R & R NR 2 ENG BLEED AIR REGULATOR IAW AMM 36-11-03-000-801 AND 36-11-03-400-801. OPS CHECK NORMAL.