1/ Unreliable Airspeed checklist in the QRH containing Pitch and Thrust tables for Approach.
2/ Flying the BUSS on the Airbus is taught BY Airbus to hold a constant Pitch and Adjust Thrust to stay "in the green" ( correct AOA and therefore IAS for the Config )
So lets start with BUSS, BUSS tells us (or at least you do) to maintain pitch and use thrust to stay in the green.
So what happens when I'm descending and I maintain pitch at say 5 degrees nose-up and I add thrust:
1. vertical speed changes
2. airspeed changes
3. vertical speed and airspeed both change
Lets now look at the unreliable airspeed checklist. This checklist says that a
decreasing pitch attitude indicates the aircraft is too fast, and that an
increasing pitch attitude indicates the aircraft is slow.
Funny that BUSS tells us to maintain pitch attitude and keep in the green with thrust, whereas in an aircraft without BUSS we use the change in pitch attitude to determine if we are on speed or not.