Hey Y'all! So I have been working on a project at work adjusting aircraft types and callsigns in the Air Traffic Control Simulator Scenarios at an Air Traffic Control Center in the US to update old scenarios to more accurately reflect the traffic that is currently flying through our airspace. Through this process I have been trying to add in more of the Embraer 175 among the likes of Skywest, Envoy, Compass, Mesa, Republic, etc. I have noticed through Flightaware (I know it's not the most accurate of sources) that the Embraer 170 Embraer 175 had for a long time been filed under the same equipment type, the "E170". However, since the introduction of the E175 Advanced I have noticed the equipment type "E75L" (E175 long wing) coming up more and more, and now the "E75S" (E175 short wing) come more into the fold. It still seems that the "E170" type out numbers both of these substantially. Which leads me to my questions...
Are there really that many more E170s than E175s flying in the US? I had thought the E175 outnumbered the E170 by a fair margin.
Is this a filing error on the part of Flightaware?
Are there airlines who have not yet switched over to the "E75S" equipment type when dispatching an E175 and still file under the "E170"?
Thanks for the help folks!
Peace

"We've recently upped our standards, so up yours." - Federal Aviation Administration