KwikFlight Spirit range and bomb drop

[yoona tale]

How do I drop the bomb exactly ?

I press on the reload button open the door and hit the weapon fire button nothing happens.

I am flying at 50000ft is there any limit for it?

Also is anyone having range issue?

Suppose to be able to fly 6000Nm without the need of refueling however the fuel ran out way before that

 

Thanks