As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 4737 - CLIMBING THROUGH 10,000 FEET AIRPLANE STARTED YAWING LEFT AND RIGHT APPROX 2-4 DEGREES, BUT LEVELED OFF AT 19,000 FEET. CREW DECLARED AND EMERGENCY AND RETURNED TO ATL. MAINTENANCE REMOVED AND REPLACED THE RUDDER POSITION TRANSMITTER. OPERATIONAL CHECK WERE GOOD. AIRCRAFT RETURNED TO SERVICE. (M)