EMB ERJ 170/175 ER/LR
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Troubleshooting; Situational Awareness; Distraction
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT; Inflight Event / Encounter Weather / Turbulence
Flight Crew Took Evasive Action; Flight Crew Became Reoriented; General Maintenance Action
Procedure; Aircraft; Weather
While enroute to ZZZ we experienced unusually high LP vibrations; still within limitations. No amber indication was observed. However; the vibrations were strong enough to be felt in the aircraft. Descending into ZZZ ATC cleared us to descend to 16;000 and cleared us for the approach. We began to descend when we noticed the vibrations were getting worse. While running the QRH we encountered sudden turbulence; shortly after we received a terrain alert and immediately executed the escape maneuver. We continued to ZZZ without further difficulty and to a safe landing. Crew became task saturated by increasing engine vibrations; sudden unexpected turbulence and QRH checklist.Suggestions - Terrain awareness chart or company jepps. Company awareness video regarding descent and approach into ZZZ.
ATC cleared us for the approach into ZZZ and notifies us of no radar coverage under 16;000 feet. The Captain set the initial approach fix and we began a descent on a VNAV path toward the airport. During descent we were handling an engine vibration issue with the QRH along with some unexpected turbulence; when we received a terrain notification. The Captain executed an escape maneuver and we continued to a safe landing on Runway XX at ZZZ. Crew became task saturated with the engine vibrations; QRH; and unexpected turbulence in descent.
EMB-175 flight crew reported distractions from troubleshooting LP engine vibrations and turbulence caused a descent and a terrain alert requiring an escape maneuver.