As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOI - AUTO FEATHER ARM DISAPPEARED ON ENGINE DISPLAY ON TAKEOFF. COMPLIED WITH FUNCTIONAL CHECK VERIFICATION PER AMM 61-20-00, PAGE 509-510. COMPLIED WITH TEST IAW AMM 61-20-00, PAGE 511-512. COMPLIED WITH FIM PROCEDURE 61-20-00, PAGES 272-274. COMPLIED WITH GROUND RUN ARMED SYSTEM FOUR TIMES. SYSTEM GROUND CHECK GOOD. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.