# SDR UALA2013062704479

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 25, 2013
- Submitted: August 23, 2013
- Operation: Air carrier
- Aircraft: [N221UA](https://openairdocs.org/aircraft/N221UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30552
- Aircraft time: 50,715 hours, 6,298 cycles
- Engine: Pwa PW4090
- System (JASC): [2300 · Communications System](https://openairdocs.org/jasc/2300)
- Part: Data Unit
- Condition: Inoperative
- Location: Satcom
- Component: Satcom
- Component part number: 8220314102
- 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/UALA2013062704479

## Discrepancy

SATCOM INOPERATIVE.  REPLACED RADIO FREQUENCY UNIT (RFU) AND SATELLITE DATA UNIT (SDU). CHECKED REF AMM 23-15-00, CHECKED OK.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.