Puggo: This makes more sense. Assuming the cam was used more like a still camera, taking one image for each frame, then there should be no combing. In which case, Chewtobacca is absolutely correct that the footage should be interpreted as 23.976 (24000/1001).

Unfortunately, AE's interpret footage dialog doesn't seem to play nice. I see no option to assume a different input rate, only to conform to a new rate. So you'll probably want to run the source through AviSynth with the AssumeFPS() directive and use the resulting file as your source.

To be clear, you likely have 23.976 fps progressive footage, marked as 29.97 fps and marked as interlaced. You want to interpret it as 23.976 fps and non-interlaced. The latter can be achieved in AE by setting separate fields: none, however there seems to be no easy way to fix the input fps in AE.