Welcome to our Knowledge Base Welcome to our Knowledge Base IRIS Flight Simulation Software - About Where do you sell your products? Hours of Operation Where is IRIS located? and 1 more ... IRIS Products Airforce Series Aviator Series General Questions and Information and 19 more ... General Support Questions [I] How to create a Support System Account E-Commerce Support Old order not in the system? My old links aren't active? Your store won't let me login! My Payment Declined, now what? Where's my product? I paid but no download link! Product Suggestions SEPECAT Jaguar Aermacchi MB-326 BAC Jet Provost Login My tickets Submit ticket Categories IRIS Flight Simulation Software - About IRIS Products General Support Questions E-Commerce Support Product Suggestions Most Popular Articles [I] How to upgrade to a new version of the IRIS PC-21 [Q] How do I remove the fuel tanks? [Q] What methods can I use to increase framerates? Hours of Operation [Q] Where do I find the manual? [I] Changelog of Pilatus PC-21 [FSX] [Q] How do I quick-start this plane?! Where is IRIS located? Old order not in the system? My old links aren't active? Your store won't let me login! [I] I've loaded the aircraft, but parts are invisible.