As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INFO ONLY: RIGHT BLEED TRIPPED OFF AT FL 380, FOLLOWED QRH BLEED REST, NO FURTHER PROBLEMS. GROUNDED - YES. NR 2 ENG FOUND VALVE GAP EXCESSIVE. VALVE REMOVAL PER AMM 36-11-06-000-801. INSTALLED SERVICEABLE HIGH STAGE VALVE, REVERSED ALT DEACTIVATION PROCEDURE LEAK CKED GOOD REF AMM 36-11-06-400-801.