What was found
AUTO FEATHER FAILED TO ARM ON TAKEOFF. ABORTED TAKEOFF AT 80 KNOTS. MAINT FOUND 64,70,494 ON ENG 1 CHAN A AND CODE 494 ON CHAN B. CLEARED PEC CODES IAW Q400AMM TASK 61-20-36-070-801 FOR BOTH ENGINES. PERFORMED OPS TEST OF AUTOFEATHER SYSTEM IAW AMM TASK 61-20-00-710-801. OPS TEST GOOD - TEST PASSED. GROUND RAN ACFT TO RATING PWR AND AUTO FEATHER ARMED AS REQUIRED. CHECKED CDS FOR CODES, NO CODES POSTED. RETURN TO SERVICE NO PARTS REPLACED. (K)