What was found
AUTOFEATHER ARM REMAINS ILLUMINATED WHEN SELECTED OFF. R & R THE NR 2 TSCU. PERFORMED OPS CHECK OF AUTO FEATHER SYSTEM. OPS CHECKED SAT. REMOVED THE NR 1 TSCU FOR TROUBLSHOOTING PURPOSES. REPLACED THE NR 1 TSCU.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AUTOFEATHER ARM REMAINS ILLUMINATED WHEN SELECTED OFF. R & R THE NR 2 TSCU. PERFORMED OPS CHECK OF AUTO FEATHER SYSTEM. OPS CHECKED SAT. REMOVED THE NR 1 TSCU FOR TROUBLSHOOTING PURPOSES. REPLACED THE NR 1 TSCU.