I know someone who studied mechanical engineering as has trained to be a pilot. Unfortunately it is very difficult to get work as a pilot so he is doing engineering in the aeronautical industry instead. So if you like planes ( & like maths, physics, being vreative and solving problems), then studying engineering would be a good idea – just in case the pilot career does not take off. (apologies for the pun)
Yes, even though pilot skills are mostly something you dont learn at school (but you will need maths at least for that). Its a very competitive job as lots of people want to be one! If you study engineering and physics and understand how everything works then you would have a big advantage over other people and it would be much more easy for you to get the job you want
Another guy, Andrew, who flies planes from work said….
“Commercial pilots may find some parts of engineering/physics useful, as they will need to understand the basics of propulsion systems appropriate to their aircraft (jets, turboprobs) as well as general principles such as aerodynamic lift, drag, weight and balance, unit conversions, etc. Also a good grounding in maths which accompanies engineering is also useful for e.g. navigation calculations, fuel burn predictions etc. However many ab initio recruits with major airlines join with A-levels or equivalent.