I don't know what the airlines actually carry on board but I just found this. FAR Part 125 Sec. 125.207 Which lists the requirements for the first aid kit on board. This doesn't look like much. I would hope the airlines would take it upon themselves to put in a better FAK, but I doubt that. I'm not saying we should take an expedition style FAK on board but it might be nice to have some adequate supplies. On my recent trip I just threw an AMK Pocket Medic into my bag. Looks like I'm going to have to upgrade my airline FAK as well.