I had success and zipped in a long screw to keep the door together as a temporary fix. I tried to find more wood inside the frame to screw into, but after two futile attempts, decided that I didn't need to make the door frame look like a piece of Swiss cheese and I'm reaching out to the forum. I've searched other postings and have found out a lot of info about door issues, but nothing addressing my situation.
Does anyone know or have a picture/schematic of how these old doors were sandwiched together? I know there is more wood somewhere in there, but it would be nice to have a reference point or location. In the photo, the screw above the hinge hit wood and brought the frame back together enough that I can operate the door, but the one below hit some foam board and nothing else. If I can get a few more screws into something solid, I can have a workable fix until I figure out how to rebuild the thing. One other note: our rig is a side entry. I imagine that all Chinooks of our vintage had the same door, but you never know.
Many thanks for your assistance.