From the info I have gathered so far, 1st year SO pay is $4,129 USD/month base pay. Apparently there is an additional amount per flight hour you are paid as well. Most trips are 4days, expect at least three 4-day trips/month and maybe a shorter trip or a sim check every other month. 21 days leave per year as SO, 42 days once you hit FO. Im just another wannabe prepping for the interview, so take this info with a grain of salt.