Since we have gyroscopes now, we can make helicopters with reliable stability...

This is an old helicopter I've made, now it works really good.
If you go to cockpit-view, you will see 4 little green blocks. Those blocks will tell you, if your helicopter is damaged. I might make more advanced versions later times.
Also i will upload a guide on how to make this (requires the overload mod, so it wont work on ios... im sorry)

Damage-indicators from left to right:
1: main rotor
2: gyroscope
3: backrotor
4: frame of the backrotor

-i don't know why I've made an indicator for the main rotor... if this thing is damaged you are just gonna crash...-

Controls:
Throttle: start engine
Vtol (up): lift off the ground
Pitch: fly forwards/backwards
Roll: roll (up to 45°)
Yaw: turn
Trim: aim weapons
Ag7: flight mode
Ag8: disable the blinking lights of the damage-indicator (when the helicopter is damaged, the green blocks will turn red and start to blink... this might be annoying so you can turn it of)