As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. EMERGENCY DECLARED. DURING DESCENT, LEFT FLAP NEEDLE ON FLAP POSITION INDICATOR BEGAN TO MIGRATE AWAY FROM THE UP POSITION CREATING A L/R NEEDLE SPLIT. UNEVENTFUL LANDING WITH TRAILING EDGE FLAPS UP. REMOVED AND REPLACED FLAP POSITION INDICATOR PER AMM 27-58-02 AND FLAP/SLAT ELECTRONICS UNIT PER AMM 27-51-01 (AALA201710209018) . OPERATIONAL CHECK GOOD.