As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 111 RDU/SWF, OIL PRESSURE ON NR 1 ENGINE REACHED 156 PSI. STAYED IN YELLOW UNTIL POWER REDUCED TO MAX CONT OF 115 PSI. RETURNED TO FIELD AFTER TAKEOFF. REMOVED AND REPLACED NR 1 ENGINE OIL PRESSURE TRANSDUCER IAW CRJ MM 79-31-05. OPS CHECK AND LEAK CHECK GOOD.