As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT HAS SLIGHT BUFFET AT ALL SPEEDS THAT INCREASED SLIGHTLY WITH INCREASED SPEED. SUSPECT SPOILER FLOAT. REMOVED AND REPLACED NR 4 LEFT SERVO VALVE IAW MM 27-64-12-04. SYS CKS GOOD IAW SAME. EFCU S/N 2873 MOVED TO NR 1 POSITION AND EFCU S/N 2879 MOVED TO NR 2 POS PER TECH SVC FOR HISTORY F/U. CHECKED ALL SPOILERS FOR FLOATING FLAPS SLOTS AND AILERONS FOR SECURITY AND OPERATION. NO ADDITIONAL PROBLEMS FOUND. OK TO CONTINUE SERVICE.