ADS data inconsistencies on the primary displays should lead to:

• A. Ignore and continue as normal.
• B. Cross-check with standby instruments and use an alternate air data source if needed.
• C. Turn on the weather radar to seek data.
• D. Reset the entire flight computer.

Answer: (B)

When the air data shown on the primary displays doesn’t look reliable, you need to verify it with a second, independent source. The standby instruments have their own air data inputs, so they aren’t affected by the same ADS/ADC fault and provide a trustworthy reference. If needed, switch to the alternate air data source to obtain data from a different channel. This cross-checking helps determine which values are correct and keeps flight safe while the root cause is addressed.

Ignoring the discrepancy or trying to use unrelated tools won’t fix the data issue. Resetting the flight computer blindly isn’t a routine corrective action and can introduce new issues. Relying on the standby instruments and an alternate air data source aligns with proper fault management and maintains situational awareness.