As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING GRND TEST OF RIGHT FLAPERON MSG 27-16039 OCCURS. ACCOMPLISHED TEST SEVERAL TIMES WITH SAME RESULT. SUSPECT POWER CONTROL UNIT. REPLACED INBOARD FLAPERON PCA FOR RIGHT FLAPERON PER MM 27-11-12, OPS AND LEAK CK GOOD. PASSES ALL MAT TESTS. AC OK FOR SERVICE.