Hello,
I am using the GSX integration into LSH's MD80. Today I had an inoperative APU, requiring a start at gate. No problem. I ticked the aircraft option to allow for engine start before push and saved. I asked for pushback, however GSX stated the procedure can't continue as it is waiting for GPU to be disconnected. (I did not get asked if I wanted to start the engines before pushback) I disregarded GSX and as I placed the fuel control switch to ON, GSX automatically removed the GPU, killing all power to the airplane.
I'm wondering if it is possible in a future version of GSX to remove the automatic disconnection of the GPU. In real world operations, no matter how unusual it may seem, a GPU will never be automatically disconnected. Regardless of beacon light position, engine state or even the state of fuel levers. Also, the fact that GSX held, while waiting for the GPU to be disconnected for an engine start at gate is not correct. As one clearly needs it to start in cases where the APU is inoperative, or if it is a GPU start (e.g., Turboprops or the 787).
Cheers,