Flight crew training manual (FCTM)

Question 2

If the flight crew suspects an unreliable airspeed condition may be caused by pitot/static problems, what action can the crew follow that approximates a safe manoeuvre or approach speed regardless of flap position?

Answer 2

The Angle of Attack (AOA) indicator can be referenced by increasing or reducing airspeed to maintain the analog needle at approximately the three o’clock position.