If you do not see the Channel ID on the PFD during loading for LPV, what should you check?

• A. NAV Preview has not been pressed; press it again until it shows up
• B. The aircraft is not in the correct mode
• C. The GPS is malfunctioning
• D. The autopilot is engaged

Answer: (A)

The key idea is that the Channel ID shown on the PFD during LPV loading is only displayed when NAV Preview is active. If you don’t see the Channel ID, NAV Preview hasn’t been pressed to reveal navigation data. Press NAV Preview and cycle it until the Channel ID appears, so you can verify the GPS channel that will support the LPV approach. Other factors like being in a different mode or autopilot status don’t control this display, and a GPS fault would show broader GPS issues beyond just the Channel ID visibility.