# SDR UIEA2020012219093

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 19, 2020
- Submitted: January 22, 2020
- Operation: Air carrier
- Aircraft: [N492MC](https://openairdocs.org/aircraft/N492MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29253
- Aircraft time: 89,251 hours, 15,431 cycles
- System (JASC): [3460 · Flight Management Computing Hardware System](https://openairdocs.org/jasc/3460)
- Part: Cdu
- Condition: Failed
- Location: Cockpit
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: J, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2020012219093

## Discrepancy

RH CDU FAILED. SWAPPED RH CDU WITH CTR POSITION IAW AMM 34-61-02. RT CDU OPS NORMAL. DEFERRED CTR CDU PER MEL 34-61-02-01, MDDR 123620, CAT 'C'LP 1220047: TESTED CENTER CDU IAW AMM 34-61-02. OPS CHECK OK. THIS CLEARS MDDR 123620.

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