As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAINTENANCE INSPECTION FOUND THE HIGH STAGE VALVE PRESSURE SWITCH PINS VERY CORRODED. THE AIRCRAFT WAS REMOVED FROM SERVICE. REPLACED NR 2 ENGINE HIGH STAGE PRESSURE SWITCH AS PER AMM 36-11-07. THE AIRCRAFT WAS RETURNED TO SERVICE.