Well I got the film back and it was a disaster. No images, frames or anything. Thinking at the shop is that the camera has a light leak - but I'm not sure if that's the case.
You mentioned that you got no frames. I assume you meant that you didn't get the register numbers and the words "Fujifilm" or "Fuji" and other words along the edge of the film roll? If so, was the roll all clear or all dark?
For negative film:
If all clear than it appears that the entire face of roll was exposed to light. If all dark it 'could' be a processing error? I dunno.
Even if you didn't load the film correctly and exposed the paper back, you would still get frames. The images would be dark - underexposed.
If you placed the film over the metal tabs instead of under, you would still get frames. The images would be there, but your registration would be wildly inconsistent.
If the shutter is not opening - guess what? You'd still get the frames. Same as exposing the paper.
Light leak - you'd get partial images in a 'wavy' like pattern starting on one edge only since the leak would be from the one edge.
Since everything to do with air travel is bad on APUG, if your roll was exposed to X-rays - a lot X-rays, you'd get a haze or fog across the entire roll.
How do I know? Let's call it trial and error!
Regards, Art.