As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLAPS FAILED AT ZERO DEGREES WHEN SELECTED ON APPROACH. CROSS REFERENCE: A6WA200740030 - FOUND EVIDENCE OF WATER IN RT NR 3 AND NR 4 FLEX DRIVE SHAFT, CLEANED FLEX DRIVE SHAFTS NR 3 AND NR 4. (K) WHEN SELECTING FLAPS FROM 8 DEGREES TO 20 DEGREES, A FLAP CAUTION MESSAGE OCCURRED IN FLIGHT. REMOVED AND REPLACED LT BRAKE AND POSITION SENSOR UNIT (BPSU). PERFORMED RIG AND OPS TEST, OPS TEST GOOD AT THIS TIME. (K)