These are the speficiations for Boeing 737-900ER BGW:
<p>Passengers (max)</p>
<img height="12" src="http://aspern.airlinesim.aero/media/gfx/icons/bullet_error.png" title="With this model the maximum amount of passengers cannot be reached even at maximum possible payload (MPL). Employ a lower seating density." width="12" alt="bullet_error.png"> 220
Cargo (max)
2,070 kg
I have 185 seats at my cabin configuration. But it still gives me only 2 cargo capacity. Looking at speficiations I should have 20 cargo capacity. I couldnt figure out why do I only get 2 cargos?
You have a maximum passenger capacity and a maximum freight capacity, but it does not mean that you are able to transport these figures together or at all (for example, if the runway is to short). If you want to transport 2.070 kg Cargo (= 20 FE) you'll have to reduce the passenger capacity. 17.830 - 2.000 = 15.830 / 95 = 166,63. So with 166 passengers you are able to transport 20 FE, as long as your route is short enough and the runways have a sufficient length.