I mounted a Tachyon XC underwing, using the tie-down point which has a female thread, and a wedge packer to make the camera horizontal.
Using the Tachyon mounting adaptor the camera was upside down, so the picture needs to be flipped up the right way with software.
With good quality batteries you can video continuously for about 3 - 3.5 hrs.
As you would expect, the CAR 35 approval cost more than the camera.
And the result:
ILS RWY 26 YMEN