What was found
DURING CLIMB, THE AIRCRAFT EXPERIENCED AN UNCOMMANDED YAW MOTION. AIRCRAFT RETURNED TO NRT AND LANDED WITHOUT INCIDENT. REPLACED THE UPPER AND LOWER YAW DAMPER COMPUTER. OPERATIONAL CHECK GOOD.
- Difficulty date
- May 13, 1998
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N617US
- Make and model
- Boeing 747251F
- Aircraft serial
- 21121
- System (JASC)
- 2210 · Autopilot System
- Part
- Yaw Damper
- Condition
- Failed
- Location
- E/E Compt
- Stage of operation
- CL
- Nature of condition
- F
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.