Loss of both DC generators in an ATR 42 or 72 is regarded to be an emergency. This video explains why.
Links to relevant ATR videos:
Introduction to the electrical systems: • ATR electric systems an introduction
Aural alerts: • ATR systems Aurals from the warning...
Engine failure at takeoff: • ATR 72600 engine failure procedure
Credits:
Airbus: • Come fly with us Farnborough Airsho...
ATR: • ATR 72600 Prototype Air to Air
Boeing: • Boeing 73710 and 7779 Flight Demons...