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An emb-145 alerted master caution for main pitch trim inoperative followed shortly by a backup pitch trim inoperative so an emergency was declared and; while on a delay vector; the crew was able to restore the backup pitch trim before the emergency landing. Maintenance determined the main pitch trim fault was a computer fault; not mechanical in origin.
| Attributes | |
| ACN | 1088791 |
| Time | |
| Date | 201305 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.TRACON |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 145 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Elevator Trim System |
| Person 1 | |
| Function | Pilot Not Flying First Officer |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
During initial descent received a main pitch trim inoperative master warning. The captain; who was flying; called for the QRH. Right afterwards the backup pitch trim inoperative master warning was received. The captain declared an emergency with ATC and asked for a delay vector while we ran the QRH. The QRH procedure fixed the backup pitch trim message but did not take away the main pitch trim message. We landed uneventfully in an emergency condition with use of the backup pitch trim. On the ground via phone; maintenance had us do a few resets on the airplane and it was determined to be a computer problem not a flight control malfunction.
Original NASA ASRS Text
Title: An EMB-145 alerted MASTER CAUTION for MAIN PITCH TRIM INOP followed shortly by a BACKUP PITCH TRIM INOP so an emergency was declared and; while on a delay vector; the crew was able to restore the Backup Pitch Trim before the emergency landing. Maintenance determined the Main Pitch Trim fault was a computer fault; not mechanical in origin.
Narrative: During initial descent received a MAIN PITCH TRIM INOP Master Warning. The Captain; who was flying; called for the QRH. Right afterwards the BACKUP PITCH TRIM INOP Master Warning was received. The Captain declared an emergency with ATC and asked for a delay vector while we ran the QRH. The QRH procedure fixed the BACKUP PITCH TRIM message but did not take away the MAIN PITCH TRIM message. We landed uneventfully in an emergency condition with use of the backup pitch trim. On the ground via phone; Maintenance had us do a few resets on the airplane and it was determined to be a computer problem not a flight control malfunction.
Data retrieved from NASA's ASRS site as of July 2013 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.