What was found
FLAPS STUCK IN BETWEEN 2 AND 5 PILOTS INFORMED FLAP 4KNOT OVERSPEED, FLAPS 15, 5 SECONDS, 2500FT. PERFORMED FSEU BITE. FOUND FAULT CODE 27-51351 TE FLAP UCM UNCOMMANDED MOTION OF THE TRAILING EDGE FLAP SYSTEM. PERFORMED TRAILING EDGE FLAP LOAD RELIEF GROUND TEST. TEST PASSED. CONTINUE FIM 27-51 TASK 830 STEP D(9). UNLOCKING FOR MX PERFORMED FIM 27-51 TASK 830. NO FAULTS FOUND. PERFORMED PHASE 1 INSPECTION OF FLAP/SLAT OVERSPEED REF AMM 05-51-08. NO DEFECTS NOTED. PERFORMED OPERATIONAL CHECK OF FLAP SYSTEM REF AMM 27-51-00. OPS CHECK GOOD FLAPS EXTEND AND RETRACT NORMALLY.