# SDR CALA2013090591008

- Type: Service difficulty report (as reported; unverified)
- 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](https://openairdocs.org/jasc/2210)
- Part: Unknown
- Condition: Malfunctioned
- Location: Autopilot Sys
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2013090591008

## Discrepancy

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.

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