weird thing I heard about the 9/11 attack last night

[Mi Beardo es Loco]

ok, so it's 7am and I'm a little bored but I thought I would share this with everyone and maybe people could share their stories or add input. DON'T TURN THIS INTO A "BUSH KILLED EVERYONE" THREAD!!!!

So I went to pick up my friend from work last night who inspects aircrafts. We hung out in the parking lot with about 10 older guys in their 50's/60's. Our talks turn to politics, then to the 9/11 attacks. They said that the second plane that hit the WTC was obvious to them that it wasn't a plane that was in AA fleet. They stated the exact plane it was and said that those types of planes didn't fly commercially since 85.
I guess they played all angles and with over 150 years of experience with building planes they ALL agreed to this.
I DO remember hearing THAT DAY that flight 175 was grounded in an emergency in Cleveland so I was shocked that it was 175 that crashed into the south tower. Going back and looking at the videos too there are tons of people that say "a plane hit the tower but it couldn't have been a commercial plane" or "the plane had no windows."
Now, I know that it doesn't make much sense because there were tons of people on that plane and what happened to them if this is true? There's just so many questions surrounding 9/11 that none of it makes sense, including the pretty obvious one with a "plane" hitting the pentigon when there was no evidence of a plane. The government said that the jet fuel insinerated the plane, yet the bodies weren't insinerated! WTF?
I know this is pretty stupid but I'm bored and this subject is pretty interesting to me simply because I always thought people were crazy for thinking conspiracies are true.