Originally Posted by BradnerBoy

Is it just me?

I could have sworn last night I could filter by extension code based on aircraft type (T:777, T:737, etc.). It "suddenly" stopped working for me last night and even today I still get "Error: QPX Warning. Illegal COMMAND-LINE prefix: T:737".

And is there any way to filter flights WITHOUT first class? '-NOFIRSTCLASS' is an odd way to filter flights that must have first class. Prepending a tilde to negate it doesn't work.