As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ATB - #1 ENG OIL QTY DROPPED TO ZERO. UPON INSEPCTION NOTICED THE OIL PRESSURE TUBE FROM ENGINE AIR/OIL HEAT EXCHANGER WITH EVIDENCE OF OIL SEEPAGE. REFER PIPC 79-21-49-08 SHEET 2 OF 5 ITEM #20. ALL BOLTS FOR OIL PRESSURE TUBE SECURE AND TORQUED IAW AMM 79-21-11-400-802-A.