What was found
PILOT REPORTS POSSIBLE EVIDENCE OF SMOKE IN CABIN/COCKPIT ON TAKEOFF FROM BETHEL. REPORT FROM CREW WAS THERE WAS NO SMOKE SMELL OR BURNING SMELL ASSOCIATED. SAID IT WAS MORE OF A "GRAPHITE" SMELL/TASTE. ONCE THIS WAS NOTATED, CREW LANDED THE AIRCRAFT. MAINT PERSONNEL PERFORMED GROUND RUNS FOR APPROX 45 MINS WHILE UTILIZING ANY HEAT SOURCES, ELECTRICAL LOADS (TO INCLUDE MEDICAL BEDS), AND NUMEROUS POWER SETTINGS. NO ISSUES WERE NOTED. UNABLE DO DUPLICATE ANY SMOKE LIKE SMELLS (INCLUDING GRAPHITE) OR VISUALS. AIRCRAFT WAS RELEASED FROM MAINT AND CHECK FLIGHT WAS SATISFACTORY WITH NO ISSUES. ORIGINALLY SUBMITTED: 1/7/22.