These are certainly considered to be motiv. Furthermore, this one could be borderline people given the person on the monitor.
Wheels and engines are typically borderline. They taken on the merit, context and quality of the shot, but the acceptance rate is very low.
The engines and gear accepted are typically where there is action or something unusual. In addition, the acceptance shows that we consider the motive to be valid for that particular shot.
Context and therefore motive of the above shot is suspect. Sure.. it's aviation, but it is somewhat of a random portion of the plane. It is clearly rejectable for motive.
Respected users.... If my replies are useful, then by all means...