As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FAINT OIL LIKE ODOR IN FLIGHT DECK WHILE ON ENGINE BLEEDS DURING DESECENT LAST APPROX 30SECS FACT 23FEB25 13:56 PHL E1 1QT LOW. SERVICED E1 WITH 1QT AS REQUIRED. PERFORMED GVI BOTH E1 AND E2. NDN AT THIS TIME. GROUND RAN E1 AND E2 IAW PIEDMONT RUNUP MANUAL. GROUND RAN FOR APPROX 10MIN WITH BOTH BLEEDS ON WITH NO SMELLS NOTED AT THIS TIME. BOTH E1/E2 OIL PRESS AND TEMP STAYED IN GREEN RANGE. OK FOR SERVICE.