As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 48 HNL-ITO - DURING CLIMB THE CREW NOTED THE RIGHT SUPPLY DUCT PRESSURE READING 100 PSI (FULL SCALE). THE CREW LANDED IN HNL WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED THE LEFT RAM AIR DOOR CONTROL AND PERFORMED AN ENGINE RUN WITH ALL OPERATIONAL CHECKS SATISFACTORY PER AMM 36-11-00. THE AIRCRAFT RETURNED TO SERVICE.