Whilst this is fixed in the future update, some of you may be happy to manually edit the fix in now. Only do this if you're happy with editing txt files and promise not to take up my time asking for support because you've done something wrong :-)

OK, go to your aircraft folder and find these folders; Flight One 727-100, Flight One 727-100 freighter, Flight One 727-200 and Flight One 727-200 freighter. In each you will find a file called aircraft.cfg. Copy each to new folders as a backup (to make it simple, just copy them to each aircrafts model folder).

OK, back to the aircraft folders (Flight One 727-100 etc) and open each aircraft.cfg in turn and look down the list for the section [Electirical]

Copy the following and replace the whole of the relevant section in the cfg file. Save it and open the next and repeat.

[Electrical]
max_battery_voltage = 25.2
generator_alternator_voltage = 28.5
max_generator_alternator_amps = 100.0
additional_system = 0, 1 , 16.5
fuel_transfer_pump = 0, 10, 17.5
avionics_bus= 0, 0, 0
avionics= 0, 0, 0
marker_beacon=0, 0, 0
autopilot= 0, 0, 0
fuel_pump= 0, 0, 0
pitot_heat= 0, 0, 0
gear_warning= 0, 0, 0
starter1= 0, 0, 0
starter2= 0, 0, 0
starter3= 0, 0, 0
light_nav= 0, 0, 0
light_beacon= 0, 0, 0
light_landing=0, 0, 0
light_logo = 0, 0, 0
light_taxi= 0, 0, 0
light_strobe= 0, 0, 0
light_panel= 0, 0, 0