1. Unload. Make sure you are no longer 'pulling G's'

2. Roll wings level

3. Power Reduce the power to avoid overspeeding.

4. gently pull back on the control wheel to ease out of the dive.

When slowed down to a safe airspeed apply throttle as needed.

(N.b.: Do not confuse a spiral dive with a spin)

TAS will increase.

Yes

Non Directional Beacon, a medium range radio navigation aid that sends out a signal in all directions for an aircraft to home to.

At the tip

NDB’s are stations emitting a signal. There is nothing for them to be accurate about. ADF's on the other hand, when tuned to an NDB need to be accurate within +/- 5 degrees.

No, VMCG is defined as the minimum control speed on the ground, with one engine inoperative (critical engine on two engine airplanes), takeoff power on other engine(s), using aerodynamic controls only for directional control and thus only applicable to ME aircraft.

A wing design feature where the angle of incidence of the wing decreases from the root to the tip.

This makes it so that the wing as a tendency to stall at the root first, maintaining aileron control for a longer time and providing a resistence to spinning, facilitating recovery.

For a commerical aeroplane: During take off. At this point the aircraft has it it's maximum weight, and accelerating in the vertical plane requiring the highest ammount of lift to counteract the weight.

To be the most efficient, aircraft descend at Vmd. Vmd increases with Weight, and therefore the rate of descent increases as well with weight.