What was found
AIRCRAFT WAS GROUNDED: HEAVY BURNED OIL SMELL IN THE COCKPIT ON TAKEOFF AND LANDING, HEAVY BURN OIL SMELL IN CABIN ON APPROACH. ACCOMPLISHED JOB CARDS 26L00021002, 26L00021004, 26T30049001, AND 26L31049009. REPLACED OIL COOLER (AALA202103249003). REPLACED OIL COOLER AGAIN (AALA202104059007) AND OIL COOLER FAN (AALA202104059008).