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EMB145 flight crew reported they experienced multiple failures due to a faulty pressure switch.
| Attributes | |
| ACN | 1393496 |
| Time | |
| Date | 201610 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 145 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Rudder |
| Person 1 | |
| Function | Pilot Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
At approximately 23;000 feet; during the beginning of climb and in very light chop; we received EICAS messages autopilot fail; yaw damper fail and sps/ice speeds (as we had just entered very light icing conditions). We ran the aom-1 abnormal procedure for autopilot fail. As directed by the procedure; we informed ATC we were no longer rvsm compliant and would need to be held below FL290. After this; we received the EICAS message rudder system 1-2 inoperative. We ran the rudder system 1-2 inoperative abnormal checklist; which led us to turn off rudder system 1 and 2. As we continued the procedure it led us to turning off rudder system-1. When we turned off rudder system-1 it caused an uncommanded yaw movement to the right. We then re-selected rudder system-1 on; and yaw movement went back to normal with rudder system-2 inoperative message remaining. We diverted to and landed at the nearest suitable airport. Normal landing was successfully completed; and all crew and passengers deplaned under normal conditions. Per maintenance; a pressure switch failure occurred.
Original NASA ASRS Text
Title: EMB145 flight crew reported they experienced multiple failures due to a faulty pressure switch.
Narrative: At approximately 23;000 feet; during the beginning of climb and in very light chop; we received EICAS messages AUTOPILOT FAIL; YAW DAMPER FAIL and SPS/ICE SPEEDS (as we had just entered very light icing conditions). We ran the AOM-1 abnormal procedure for AUTOPILOT FAIL. As directed by the procedure; we informed ATC we were no longer RVSM compliant and would need to be held below FL290. After this; we received the EICAS message RUDDER SYS 1-2 INOP. We ran the RUDDER SYS 1-2 INOP abnormal checklist; which led us to turn off RUDDER SYS 1 and 2. As we continued the procedure it led us to turning off RUDDER SYS-1. When we turned off RUDDER SYS-1 it caused an uncommanded yaw movement to the right. We then re-selected RUDDER SYS-1 ON; and yaw movement went back to normal with RUDDER SYS-2 INOP message remaining. We diverted to and landed at the nearest suitable airport. Normal landing was successfully completed; and all crew and passengers deplaned under normal conditions. Per maintenance; a pressure switch failure occurred.
Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.