Vilters
just a couple of points to mull over
what do you do if there also is no airspeed indication?
remember stall is about AOA and indicated airspeed is just a guide! Short final approach speed is 1.3 X the stall speed to allow you a margin to transition from descent to landing it could be 1.4 1,5 whatever.
Landing is not ONLY about stalling onto the ground surface. It usually is but doesn't have to be.
Fly my Citation and you could cover up the IAS and fly totally on the AOA gauge and it would be a damned sight more accurate
It has a lot to do with feel and energy management
pace