You’ve experienced the thrills of SOP 1, which modelled general stock Boeing SOPs. Now it’s time for something brand new! It’s time to fly your 737 using a very different SOP (SOP 2). The big difference between between SOP 1 and SOP 2 is that in SOP 2 the user (the Captain / Pilot Flying) does much more of the actual “work” with regards to flipping switches, etc. Featuring over 13,000 brand new sound files, SOP 2 is based on a real-world low cost European airline.