# SDR SIMA20220725004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 25, 2022
- Submitted: July 26, 2022
- Operation: Air carrier
- Aircraft: [N661JA](https://openairdocs.org/aircraft/N661JA), 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: 145766
- Aircraft time: 43,786 hours, 38,466 cycles
- System (JASC): [2311 · UHF Communications System](https://openairdocs.org/jasc/2311)
- Part: Rmu
- Condition: Inoperative
- Location: Flight Deck
- Stage of operation: LD
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20220725004

## Discrepancy

THROUGH 8000' RMU 1 OUT - ELECTRICAL BURNING SMELL IN THE COCKPIT.  TROUBLESHOT PER FIM 21-20-00-210-801-A. DETERMINED CAUSE OF SMOKE TO BE THE #1 RMU. PULLED AND OCLLARED #1 RMU CIRCUIT BREAKER.  REMOVED AND REPLACED #1 RMU IAW AMM 23-81-01. OPS CHECK GOOD. NO ELECTRICAL BURNING SMELL NOTED. UNCOLLARD AND RESET CIRCUIT BREAKER. OPS CHECK GOOD.

---
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.