As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT THE F/A REPORTED A FLUID LEAK FROM THE NR 1 NACELLE. AIRCRAFT RETURNED TO THE DEPARTURE FIELD. CREW REPORTED THERE WAS NO LOSS OF OIL PRESSURE OR ASSOCIATED CAUTION LIGHTS. FOUND NR 1 PROP CONTROL UNIT LEAKING. REPLACED PCU.