[quadcopter advice]

Get yourself a Q-Bot Micro and a normal 2.4GHz 6 channel transmitter - something like a DX6i. (or go real advanced and get an FrSky Taranis transmitter that will last a lifetime!!!)  You then have the basis for learning to fly somethings very cheap - the quad is

[Where can i Fly FPV , The UK Law]

fpv wise you would use an osd. 

 

none fpv wise, this is going to be somewhat hit and miss, the best way would be some extra coding

in the flight system ( both naza and multiwii should have a max ceiling limiter ( using baro to measure high/pressure) 

 

 

for us, our major problem is that CLASS D airspace and Control Zone. 

we are somewhat limited to 400ft  ( the max ceiling for class D is ground to 1,500ft ), but this i think is Visual only.

 

I need to do tons or research to get upto date on current aviation ruling and laws , its been a few years since i was

flight sim and flying with ILS and visual , but am already in the know about squalking etc etc

so when/if it comes to it i will write out some simple coms for everyone to contact Air traffic control (ATC)

and how to talk the talk.  ( i wonder if the social will pay for me to sit a UAV-s course lol )

 

 

truth is at 400ft your not going to see your craft, its going to be a small speck in a blue sea to be very honnest.

 

ILS ( instrument landing system ) in other words your blind and all you see is your OSD readout.

you can fly just by OSD and no video feed, it just takes a little time to get used to. ( i have around 180 flying hours in small cessna sim craft 

and have about 40hrs flying jetliners both of these via visual and ILS )

March 2014 saw the altitude limit for model craft up to 3.5kg raised to 1000ft AGL max.

What sim are you flying for the Cessna 182 and 'airliner' btw?

And how far are you flying ILS?