Gnome hung starts
Hi Guys, Im an engineer looking after 3 AB204s deployed in Firefighting roles. Problem is, the engine manual Ive been given is for a Gnome 501(?) these being 1400s. I cant find PTIT values anywhere. Can some one help? I have also experienced this hung start problem on one of our machines. From what I can gather, the electric HP cock is too slow, in the event of a surge, to adequately protect the turbines. Not being familiar with the Gnome, I guess its safe to assume that all the turbine stages will be affected, not just the PT? I know that on one of our machines, the electric HP cock is inoperative because of voltage drop on the closing circut. Ive been using the LP manual cock to shut down th Helo for now until I can solve the voltage problem. Any suggestions?