What is this subreddit’s consensus on “The 5th Plane” (United Flight 23)?

I recently bought a book talking about 9/11 and in it I found a strange text: „9:19AM: United Flight 23 aborts its takeoff and, as a result, is not hijacked.”

At first I thought they mixed up flight 93s numbers but when I dug deeper I found out that it was possibly a 5th plane but I couldn’t find much else. (I apologise if my English is bad I hope it’s understandable)

So what is this subreddit’s or the 9/11 investigations consensus on flight 23?