As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI THE SSU STALL IDENT LIGHT ILLUMINATED & THE NR 1 STALL CHANNEL DOES NOT TEST. EXTENSIVE TROUBLESHOOTING FOUND THE LT INBD FLAP POSITION MICRO SWITCH GNDED OUT INTERNALLY. THE DEFECTIVE SWITCH WAS REMOVED & A NEW SWITCH INSTALLED PN 9002EN3.