As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CRUISE, THE ENGINE POWER DECREASED UNCOMMANDED TO IDLE SETTING, FOLLOWED BY LOSS OF OIL PRESSURE. THE CREW ELECTED TO SHUTDOWN THE ENGINE AND RETURN TO BASE. INVESTIGATION FOUND THE P3 FITTING TO BE CONTAMINATED WITH FOREIGN DEBRIS. FITTING AND SYS WAS CLEANED AND THE AC RETURNED TO SERVICE. (TC NR 20080116008)