# SDR AALA201912269010

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 24, 2019
- Submitted: December 27, 2019
- Operation: Air carrier
- Aircraft: [N799AN](https://openairdocs.org/aircraft/N799AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 30258
- Aircraft time: 75,126 hours, 9,511 cycles
- System (JASC): [2300 · Communications System](https://openairdocs.org/jasc/2300)
- Part: Control Unit
- Part number: 8220314101
- Part serial: 682
- Condition: Failed
- Location: Acars
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201912269010

## Discrepancy

AIRCRAFT WAS GROUNDED: FLIGHT RETURNED TO DFW ACCOUNT ON ACCOUNT OF ACARS AND SATCOM FAULT. MAINTENANCE REMOVED AND REPLACED SDU IAW AMM 23-15-10. OPS CHECKS GOOD.

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