Thanks - I'm sure that took several minutes to type. Sorry if my question misled. I know what an IDG is and I am very familiar with the fuel systems and engine control systems on all the Boeing jets. I was curious what the poster who used the term "IDG spar valve" thought that valve was doing because the spar valve has nothing directly to do with the IDG.
Last edited by Dave Therhino; 26th March 2020 at 03:40.