# SDR ASAA2012120393403

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 3, 2012
- Submitted: December 7, 2012
- Operation: Air carrier
- Aircraft: [N568AS](https://openairdocs.org/aircraft/N568AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35183
- Aircraft time: 22,674 hours, 7,132 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Cdu
- Part number: 1741010201
- Part serial: 005129
- Condition: Failed
- Location: Cockpit
- Part time: 22,702 hours, 7,144 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2012120393403

## Discrepancy

COCKPIT CDU FAIL DURING BUS TRANSFER.  ACFT GROUNDED. DUPLICATED.  REPLACED LT FMCS MCDU REF MM34-61-01, OPS CK NORMAL & S/W CK OK.

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