# SDR R61A2022012800066

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 25, 2022
- Submitted: January 28, 2022
- Operation: Air carrier
- Aircraft: [N736YX](https://openairdocs.org/aircraft/N736YX), registered now
- Make and model: Emb ERJ 170-200 LR
- Registry model: [EMB ERJ 170-200 LR](https://openairdocs.org/model/embraer-s-a-erj-170-200-lr) (OpenAirDocs)
- Aircraft serial: 17000541
- Aircraft time: 14,451 hours, 9,648 cycles
- System (JASC): [2300 · Communications System](https://openairdocs.org/jasc/2300)
- Part: Interface Unit
- Part number: 7517964967
- Part serial: 1611B450
- Condition: Faulted
- Location: Zone 100
- Part time: 5,923 hours, 3,938 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/R61A2022012800066

## Discrepancy

AIRCRAFT LOST RADIO COMMUNICATIONS, BUT ACARS FUNCTIONING.  ABLE TO ESTABLISH COMMUNICATION WITH ATC USING BACKUP RADIO. DECLARED EMERGENCY, LANDED WITHOUT INCIDENT. R&R NIM 1 MODULE IAW AMM 34-02-04.

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