# SDR UALA2012022001032

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 19, 2012
- Submitted: March 29, 2012
- Operation: Air carrier
- Aircraft: [N222UA](https://openairdocs.org/aircraft/N222UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30553
- Aircraft time: 44,839 hours, 5,427 cycles
- Engine: Pwa PW4090
- System (JASC): [3400 · Navigation System](https://openairdocs.org/jasc/3400)
- Part: Datalink
- Part number: 8220314102
- Part serial: 34
- Condition: Faulted
- Location: Satcom
- Stage of operation: NR
- How discovered: O
- Nature of condition: P
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012022001032

## Discrepancy

SATCOM SYSTEM FAILS OR NO BUSS ACTIVITY.  ADVISORY MESSAGE 2368893 ACTIVE ES HARD.  REPLACED SATCOM DATA UNIT PCN 583-9200 PER MM, OP CHECKED FAIL DUE TO LNA-DIPLEXER HAS A FAULT MSG23-60091 OR FIM 23-15 TASK 807.  COMPLETED STEP C OF THE FIM.

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