# SDR SIMA20130117014

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 17, 2013
- Submitted: January 21, 2013
- Operation: Air carrier
- Aircraft: [N676AE](https://openairdocs.org/aircraft/N676AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 14500807
- Aircraft time: 22,260 hours, 19,331 cycles
- System (JASC): [2310 · HF Communications System](https://openairdocs.org/jasc/2310)
- Part: Unknown
- Condition: Malfunctioned
- Location: Comm System
- Stage of operation: AP
- How discovered: O
- Nature of condition: O
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20130117014

## Discrepancy

ON FLIGHT 3249 AIR TRAFFIC CONTROL DECLARED AN EMERGENCY ON BEHALF OF THE CREW DUE TO THEY WERE UNABLE TO TUNE COM 1 OR COM 2 THRU RMU OR TBCH OR UNILINK.  TALKED TO ATC ON COM 3.  THE AIRCRAFT LANDED WITHOUT INCIDENT.  THE AIRCRAFT WAS REMOVED FROM SERVICE.  CYCLED A/C POWER.  COMM #1 AND COMM #2 OPC GOOD IAW AMM 23-12-00.  PUT UNILINK BACK IN "DATA" MODE, IT OPC GOOD IAW AMM 23-22-00.  THE AIRCRAFT WAS RETURNED TO SERVICE.

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