What was found
AIRCRAFT WAS NOT GROUNDED: ON FINAL, SELECTED FLAPS 30 DEGREES FOR LANDING. FLAPS STOPPED AT 25 DEGREES AND A "TOO LOW FLAPS" WARNING SOUNDED. AFTER THE GO AROUND, FLAPS RETRACTED NORMALLY. SUBSEQUENT APPROACH WITH FLAPS AT 30 DEGREES WAS NORMAL. ACCOMPLISHED FLAP/SLAT ELECTRONIC UNIT BUILT IN TEST EQUIPMENT PER FIM 27-51-00-810 AND PROXIMITY SENSOR ELECTRONIC UNIT BUILT IN TEST EQUIPMENT PER FIM 32-09-00. NO FAULTS NOTED. CYCLED FLAPS MULTIPLE TIMES PER AMM 27-51-00. NO DEFECTS NOTED. PERFORMED GENERAL VISUAL INSPECTION OF FLAPS PER AMM 27-5 1-00. NO DEFECTS NOTED.