July 23rd, 2016, 09:27
Papi: Regarding the Fuel Pump sounds - Roman kindly answered correctly that this is unfortunately not facilitated in fs9. It is included for the benefit of FSX users only. I have no idea as to the "Beep" sounds you mention - the sounds have been extensively tested in both sims without Reports of such an issue. I can only suggest, like Roman, that this is due to some exterior source or parallel program.