Captains,Don't work the EADI and EHSI under only the batteries power?Sincerely,Kan-ichiro Fushihara

Kan-ichiro-san,The EFIS displays are powered by the Left/Right Essential Avionics Busses which cannot not powered by the batteries alone. They can be powered by their respective engine generators, by the cross-side engine generator through the Cross-Tie bus, or by the GPU through the Cross-Tie Bus.Hope that helps you.Regards,Nick

Dear Nick,Thank you very much for your kind instruction. I'm fully understand. The PMDG J41 is much detailed but difficult a little to me. I have to study a lot.Sincerely,Kan-ichiro Fushihara