As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JFK - FLT 647 - EN ROUTE JFK-SJU, DURING CLIMB-OUT, AIRCRAFT ENCOUNTERED TURBULENCE AND AIRCRAFT YAWED SEVERAL TIMES. SLATS EXTENDED WITH TAKEOFF SLATS SET. AIRCRAFT RETURNED TO JFK WITH NO FURTHER INCIDENT. REPLACED NR 1 FLIGHT AUGMENTATION COMPUTER. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)