Originally Posted by
rippey
Question for current 604 drivers - would you expect to see the ADG out in this scenario? The video is blurry but I can’t see the ADG. My experience is limited to the 601 and Globals, but in both of those the ADG or Rat would deploy immediately following double engine failure. I am guessing that in the 604 the apu generator is brought online in a standby mode when the APU is running and in this case automatically takes the electrical load when the engine driven gens drop off, preventing the ADG from deploying?
601/604/605 and 650 work the same way… if the APU was running it’s generator would be on standby and stay in that mode even with a dual engine failure.
The ADG should deploy automatically and provide limited electrical power but if you want the APU’s generator to take over and feed the electrical power, you need to select a switch that will change the power source.