# SDR CHQA20130310077

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 10, 2013
- Submitted: March 14, 2013
- Operation: Air carrier
- Aircraft: N377SK
- Make and model: Emb EMB-135KL
- Registry model: [EMB EMB-135KL](https://openairdocs.org/model/embraer-emb-135kl) (OpenAirDocs)
- Aircraft serial: 145579
- Aircraft time: 28,071 hours, 24,444 cycles
- Engine: Rroyce AE3007A13
- Engine time: 18,638 hours, 18,642 cycles
- System (JASC): [2720 · Rudder Control System](https://openairdocs.org/jasc/2720)
- Part: Pressure Switch
- Part number: 15793101
- Part serial: 1204
- Condition: Faulty
- Location: Rudder
- Part time: 2,181 hours, 2,143 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CHQA20130310077

## Discrepancy

CREW REPORTED THAT THEY RECEIVED RUDDER SYSTEM 1 AND 2 INOPERATIVE MESSAGES ON CLIMBOUT.  THE ASSOCIATED MESSAGES OF YAW DAMPER FAIL AND AUTO-PILOT FAIL WERE ALSO PRESENT.  THE CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT.  MAINTENANCE REPLACED THE RUDDER SYSTEM 1 AND 2 PRESSURE SWITCHES.  OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED.

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