Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Communication Breakdown
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Overcame Equipment Problem; Flight Crew Landed As Precaution; General Maintenance Action; General Flight Cancelled / Delayed
Aircraft
During my leg while cruising at FL350 to from ZZZ to ZZZ1 with the autopilot engaged. multiple caution messages popped out; suggesting some electrical issue with the #2 IDG/BUS. there was not a lot of communication in between the pilots but the Captain grabbed the Quick Reference Handbook and began working; So I decided to keep flying and work the radios. I kept monitoring the Captains body actions because I know that moving the wrong electrical switch could lead to further electrical issues. During the troubleshoot I confirmed that he could touch the Integrated Drive Generator 2. when he mentioned he was going to turn on the APU I reacted and say no; he asked me Why I did not want APU; so I advised that we were above the maximum altitude for APU start; so he understood and agreed to wait. advised descending; to which he agreed. I requested 29;000 ft. from ATC; and descended to 29;000 ft. When I suggested we were at an altitude where we could; he asked me to turn on the APU. When attempted to start APU about 4 screens went black momentarily and the autopilot and auto throttles disconnected. I announced I had the flight controls; and the throttles. The Captain re-engaged the autopilot without asking me but voiced it over and I monitored the correct engagement. Given the autopilot was responding correctly I decided to leave it engaged and monitor it. Given the APU caused appeared to cause the distruption for the APU I did not attempt turning it on again. Captain kept working Quick Reference Handbook; and coordinated with Dispatch and flight attendants. Captain decided to do the approach and landing; we briefed and landing at ZZZ1 without incident. No request for priority handling was declared.Multiple electrical failures.While we seemed to reach each other fairly well; I feel like the threat was treated like a no-time threat rather than a time threat. However; the outcome was positive.
First Officer reported multiple electrical failures after the #2 IDG failed in flight.