As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENG OIL QTY SHOWED A STEADY DECREASE AS FLIGHT PROGRESSED. ULTIMATELY QUANTITY WENT TO ZERO INDICATION. OIL TEMP AND PRESSURE REMAINED STEADY IN THE NORMAL RANGE AT ALL TIMES. FOUND NR 1 ENG GARLOCK SEAL AT STARTER LEAKING. REPLACED STARTER GARLOCK SEAL REF M/M 72-61-0. RAN ENG AT TAKEOFF POWER ALL NORMAL NO LEAKS. A/C OK FOR SVC.