EMB ERJ 170/175 ER/LR
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Troubleshooting; Situational Awareness; Human-Machine Interface; Confusion; Communication Breakdown; Workload
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Provided Assistance; Flight Crew Became Reoriented; Flight Crew Overcame Equipment Problem; Flight Crew Requested ATC Assistance / Clarification
Aircraft; Human Factors; Procedure
As we were being vectored to get established on final; we received an IDG FAULT Caution message; I decided to run the QRH; while we were in a high [workload situation]; lots of communication with ATC as we were being vectored; descended; and slowed; lots of radio chatter caused a breakdown in our communication within the flight deck and that resulted in turning the wrong IDG off; which caused a momentary loss of all AC and subsequent deployment of the RAT; at this point with emergency power only I decided to [request priority handling]; accept the longer runway; and continue to an uneventful landing; after landing we continued to the gate; as normal power had been restored.The cause of this event can be contributed to the fact that we were rushed in completing the QRH in a very busy environment; while being vectored and slowed and while starting to configure for landing.Based on what I experienced; I would not run the QRH that close to the runway for a caution message; in a high [workload situation]; rather I would wait and deal with it on the ground.
Captain reported a failed integrated drive generator on final approach and selected the wrong IDG to off; resulting in a loss of electrical power. The Captain reported asking for priority handling and continued to landing.