# SDR JJBA20211227036

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 27, 2021
- Submitted: December 30, 2021
- Operation: Air carrier
- Aircraft: [N11187](https://openairdocs.org/aircraft/N11187), registered now
- Make and model: Emb EMB-145XR
- Registry model: [EMB EMB-145XR](https://openairdocs.org/model/embraer-emb-145xr) (OpenAirDocs)
- Aircraft serial: 14500927
- Aircraft time: 33,027 hours, 23,486 cycles
- System (JASC): [2720 · Rudder Control System](https://openairdocs.org/jasc/2720)
- Part: Pressure Sensor
- Part number: 15H0048PH
- Part serial: 0728
- Condition: Inoperative
- Location: Rudder
- Part time: 23,952 hours, 18,415 cycles
- Stage of operation: TO
- How discovered: V
- Nature of condition: O
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/JJBA20211227036

## Discrepancy

RUDDER 1-2 INOPERATIVE ON SHORT FINAL INTERMITTENT. DAU WAS REPLACED AND SUSPECTED TO BE CAUSE OF MULTIPLE SYSTEM MALFUNCTIONS. AFTER TAKE OFF THE DAU 2A FAIL MESSAGE DISPLAYED AND THE RUDDER SYS 1-2 INOPERATIVE MESSAGE REAPPEARED AFTER EMERGENCY WAS DECLARED. REPLACEMENT OF RUDDER SYS 2 SWITCH PRESSURE SWITCH. BOTH RUDDER AND AILERON SHUTOFF SWITCHES WERE FOUND ENGAGED AFTER LANDING. VERIFY SYSTEM 1 GOES TO STANDBY AND RUDDER OVERBOOST IS DISPLAYED ABOVE 135 KNTS.

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