What was found
WHEN ENGAGING CENTER A-P TO CMD IT DISCONNECTS. AUTOPILOT DISCONNECT EICAS & MASTER. FCC-C TEST PASSED IN CMC. AILERON SERVO TEST FAILED. MESSAGE 22239, NO TIME TO T-S. AIRCRAFT DOWN GRADED TO AUTOLAND LIMIT LAND 2.
- Difficulty date
- September 2, 2013
- Submitted
- September 6, 2013
- Operation
- Air carrier
- Aircraft
- N179UA
- Make and model
- Boeing 747422
- Aircraft serial
- 25158
- Aircraft time
- 92,482 hours, 11,085 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 2210 · Autopilot System
- Part
- Unknown
- Condition
- Malfunctioned
- Location
- Autopilot Sys
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.