As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEG FLIGHT 2378: FLAPS STUCK AT 12 DEGREES TAXIING IN. COMPLIED WITH FLAP POWER CAUTION CHECKLIST AND IT RESOLVED ITSELF. MAINTENANCE COMPLIED WITH SERVICE LETTER SL-27-002A. RESET FLAP POWER SYSTEM. OPS CHECK NORMAL. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.