As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, PILOT REPORTED NR 2 BLEED OSCILLATING DURING CLIMB +/-30 PSI. RETURNED & PERFORMED AN UNEVENTFUL LANDING. PERFORMED FAULT ANALYSIS IAW FIM 36-14-00-810-811-A, LEAK TESTED THE SERVO LINES OF THE RT TORQUE MOTOR CONTROLLER IAW AMM 36-11-06-790-801-A. FOUND A LEAK ON THE RT NAPRSOV PRESSURE SUPPLY LINE. LINE REPLACED IAW AMM 36-11-06-000 400-803-A. TESTS WERE SATISFACTORY. THE ACFT WAS RETURNED TO SERVICE.