As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING FLIGHT, ON APPROACH, THE STAND-BY GENERATOR WARNING ILLUMINATED. AN UNEVENTFUL LANDING WAS ACCOMPLISHED AT DESTINATION. POST-FLIGHT INSPECTION REVEALED OIL ON THE SIDE OF THE AIRCRAFT AND NO OIL SHOWING ON THE ENGINE DIPSTICK. 4 QUARTS OF OIL WERE ADDED TO THE ENGINE BEFORE IT SHOWED ON THE DIPSTICK.