I'm a member of APA 1224 but I'm not on the MEC.
Just to avoid confusion...
APA 1224 is a Teamster's Local. As such, we have no MEC. MEC's are used by ALPA, not the IBT. What we have is an executive board (e-board) that functions similarly to an ALPA MEC.
My impression is that an IBT e-board has more autonomy than does an ALPA MEC. Perhaps someone else can expand on that point.