As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB OUT, AT APPROX 28,000 FT THE CREW NOTED THE RT ENGINE OIL PRESSURE DROPPED BELOW 25 PSI. THE QRH WAS COMPLIED WITH AND THE CREW BROUGHT THE RT ENGINE BACK TO IDLE. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED, WHERE A SINGLE LANDING WAS PERFORMED SAFELY. MAINTENANCE REMOVED AND REPLACED THE CARBON SEALS IN THE RT ENGINE ACCESSORY GEARBOX IAW AMM. OPERATIONAL CHECKS GOOD. AIRCRAFT OK FOR SERVICE. (K)