# SDR CHQA201100002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 3, 2011
- Submitted: January 5, 2011
- Operation: Air carrier
- Aircraft: N266SK
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145241
- Aircraft time: 26,701 hours, 21,248 cycles
- Engine: Allsn AE3007A
- Engine time: 22,615 hours, 17,872 cycles
- System (JASC): [2397 · Communications System Wiring](https://openairdocs.org/jasc/2397)
- Part: Connector
- Part number: MS3476L246LS
- Condition: Dirty
- Location: Nr 2 Rmu
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CHQA201100002

## Discrepancy

AFTER TAKEOFF THE CREW REPORTED THAT THE COMM 2 RMU WAS BLANKED OUT AND THE BACK-UP HEAD COULD NOT BE TUNED AND THAT COMM 1 WAS SWITCHING BETWEEN ACTIVE AND TUNING FREQUENCIES.  THE AIRCRAFT RETURNED TO IAH AND LANDED WITHOUT INCIDENT.  MAINTENANCE TROUBLESHOT THE FAULT TO THE RMU 2 AND PLACED IT ON MEL.  THE MEL WAS CLEARED IN CMH ON 1/4/2011 WHEN MAINTENANCE CLEANED THE CONNECTOR FOR THE NR 2 RMU AND THEN RE-SECURED THE CONNECTOR WITH NO FURTHER DEFECTS NOTED.

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