An airplane in a spin does not gain airspeed and its rate of descent is relatively slow.
For example a short A-frame is positive. High airspeed in relation to the turbulence is positive too.
This type of accident happens when a pilot tries to fly out of ground effect without sufficient airspeed or power.
What's the fastest way to gain airspeed in a non-afterburner-equipped aircraft?
The plane's clamshell airbrakes at the back of the fuselage keep airspeed from rising uncontrollably during the dive.
When my displays were restored, the aircraft maintained airspeed and altitude.
You may be surprised to find that the airplane will hold roughly the same airspeed in a power-off glide at the same attitude.
Begin with airspeed, and use the pointed handle of the true airspeed indicator as a speed bug for Vr, Vy or approach speed.
Even modern airliners take off into head winds to increase the plane's relative airspeed .
They can still read the altimeter and airspeed , and they still have navigation aids available to them.