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An erj-190 flight crew declared an emergency and returned to their departure airport after receiving amber level vibration from the left engine.
| Attributes | |
| ACN | 1056645 |
| Time | |
| Date | 201212 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Dawn |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 190/195 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Turbine Engine |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
On takeoff roll at approximately 100 KIAS the left engine lp vib indicated amber 4.6. The QRH procedure for abnormal engine vibrations was completed and the maximum N1 possible was 60% N1. We advised departure we would be returning to the airport. I briefed the flight attendants via interphone of the reason for the return; and advised it would be a normal landing. I then briefed the passengers of the general nature of the situation. Finally I advised dispatch via ACARS and; as a precaution; declared an emergency with approach. We completed the engine-out descent approach and the engine out landing checklists as a precaution in the event the vibrations increased and shutdown of the engine was required. After landing we advised the tower that no further assistance was required; and taxied the aircraft to the gate where we made a log entry. Maintenance later informed us a chip detection message was indicated on the maintenance pages.
Original NASA ASRS Text
Title: An ERJ-190 flight crew declared an emergency and returned to their departure airport after receiving amber level vibration from the left engine.
Narrative: On takeoff roll at approximately 100 KIAS the left engine LP VIB indicated amber 4.6. The QRH procedure for abnormal engine vibrations was completed and the maximum N1 possible was 60% N1. We advised departure we would be returning to the airport. I briefed the flight attendants via interphone of the reason for the return; and advised it would be a normal landing. I then briefed the passengers of the general nature of the situation. Finally I advised Dispatch via ACARS and; as a precaution; declared an emergency with approach. We completed the Engine-out Descent Approach and the Engine Out landing checklists as a precaution in the event the vibrations increased and shutdown of the engine was required. After landing we advised the Tower that no further assistance was required; and taxied the aircraft to the gate where we made a log entry. Maintenance later informed us a chip detection message was indicated on the maintenance pages.
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.