# SDR UALA2012031201609

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2012
- Submitted: March 30, 2012
- Operation: Air carrier
- Aircraft: N424UA
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 506
- Aircraft time: 59,082 hours, 22,002 cycles
- Engine: Iae V2527A5
- System (JASC): [2211 · Autopilot Computer](https://openairdocs.org/jasc/2211)
- Part: Computer
- Part number: B397BAM0513
- Part serial: 102
- Condition: Faulty
- 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/UALA2012031201609

## Discrepancy

WHEN USING AUTOPILOT 1FMGC DROPS OUT OF MNGDSPEED AND NAV.  REVERTS TO SLCTD SPD AND HDNG :TBLSHT & SUSPECT FAC NR 1.  SWAPPED FACS NR 1 & 2 PER MM.  NR 2 FAC INOP.  A-C IS RMV'D FROM CAT II & CAT III, REF CF982.  REPLACED FAC 2 PER MM.  SYSTEM TESTS OK.  PERFORMED SATISFACTORY CAT III TEST PER MM.  AC RETURNED TO CAT III SERVICE.

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