As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE FLIGHT DEPARTED WITH 1 ENG. BLEED INOP UNDER MEL. AFTER DEPARTURE, THE REAMING ENGINE BLEED BECAME UNSERVICEABLE. THE FLIGHT LANDED BACK WITHOUT FURTHER INCIDENT. NR 1 NAPRSOV REPLACED 36-11-03 PB401. ENG RUN CARRIED OUT - CK`D SERV.