How would you handle unreliable airspeed indications on the A320?

• A. Cross-check against standby instruments; follow ECAM/QRH procedures; rely on raw data to maintain safe flight.
• B. Ignore the indication and continue with current airspeed.
• C. Disconnect the autopilot and fly by feel.
• D. Use only the captain's instrument readings.

Answer: (A)

When airspeed indications become unreliable, the first priority is to establish a safe, independent reference for speed and then follow the published procedures. The best course is to cross-check the primary airspeed with the standby instrument, which is independent from the normal air data system and provides a trusted reference in fault conditions. While doing this, you should consult the ECAM/QRH procedures for unreliable airspeed; these guide you through the exact actions to isolate the fault, verify the air data system, and apply the appropriate protections or reversion modes.

Relying on raw data means using the direct, unfiltered indications from the pitot-static sources or the standby instrument rather than the potentially erroneous, processed readings the cockpit displays may show. With those independent readings, you can set safe pitch and power to maintain a stable speed range until the fault is resolved. This approach keeps the airplane under control and reduces the risk of misinterpretation from faulty airspeed data. The other options skip essential redundancy, ignore the malfunction, or rely on one pilot’s perception, which is unsafe in an unreliable airspeed situation.