Date: 202111
Local time of day: 0001-0600
Location: ZZZ.ARTCC, US
Aircraft: Regional Jet 700 ER/LR (CRJ700)
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Cruise
Airspace: Class A ZZZ
ATC / advisory: Center ZZZ
Aircraft component: AC Generator/Alternator
Component problem: Failed
Reporter organization: Air Carrier
Reporter function: Captain; Pilot Not Flying
Reporter qualification: Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Human factors: Troubleshooting; Workload
Anomaly: Aircraft Equipment Problem Critical
Detector: Automation Aircraft Other Automation; Person Flight Crew
When detected: In-flight
Result: Aircraft Equipment Problem Dissipated; Flight Crew Overcame Equipment Problem; General Maintenance Action
Contributing factors: Aircraft
Primary problem: Aircraft

Narrative: While at cruise; we had a Hydraulic 3 Low Press come on to the CAS. I check the hydraulic page and saw Hydraulic 3 was unpressurized and transferred the plane and the radios to the FO (First Officer) while I grabbed the QRH. Noting the CAS messages; I checked the electrical page and saw AC BUS 2 was unpowered with no message. With no CAS message displaying for the AC Bus 2 and it not being in the non-messages QRH list; I ran the AC Bus 2 QRH since that seemed to be the issue affecting the other systems. I also told my FO to descend us to below FL370 so we could get the APU running. The AC BUS 2 QRH called for GEN with switch off; reset; then auto; which I did. We restored power to AC BUS 2 and got a GEN 2 Off amber message which has a QRH of its own; which I ran since we had a corresponding CAS message and both QRH procedures led to the same steps - which was to turn GEN 2 switch to off; reset; and leave it there and start the APU if available and below FL370. Which; was something I had already put in the works after seeing the electrical page. After that we had a Right Windshield Heat amber message; which was part of losing AC Bus 2 and QRH-driven reset of the Right Windshield Heat switch. We had an intermittent APU fault white status message the rest of the flight; which I ran the QRH for and was mainly a loss of redundancy of certain APU systems but we were getting power from the APU so I was OK with that.After running the QRHs; [I] discussed what just happened with the FO to make sure I had covered everything that had just happened and didn't miss anything; and that there was nothing he saw that concerned him. I sent a ACARS message to Dispatch / Maintenance; and called the FA (Flight Attendant) to see if they had noticed anything. They informed me that the cabin light had flickered; which we had the same thing in the cockpit before we got the first CAS message and that everything was normal in the cabin.We got to the gate and I called Maintenance Control and wrote up the Gen 2 fail inflight; and APU fault messages. I discussed the Right Windshield Heat message and Maintenance Control said that was a side effect of AC BUS 2 failing and since it reset with the switch; they said to not write that up; which confirmed my thoughts on that message being a side effect of AC BUS 2.




Synopsis: CRJ-700 Captain reported a Generator 2 failure during cruise; proceeded to complete QRH procedures which provided APU electrical power; and safely landed at destination.