During LPV tuning, what additional items must be verified beyond channel ID and altitude constraints?

• A. All fixes and altitude constraints
• B. Only the channel ID
• C. Weather data
• D. The autopilot is engaged

Answer: (A)

In LPV tuning, the navigation data must fully define the approach path, not just basic identifiers. After confirming the channel ID and the published altitude constraints, you verify that every fix along the LPV path is present and has the correct altitude constraint. This ensures the vertical guidance and lateral path are consistent with the procedure, providing the intended precision and obstacle clearance. If a fix is missing or its altitude constraint is incorrect, the LPV guidance can degrade or fail to meet the approach requirements. Weather data isn’t part of the tuning data, and whether the autopilot is engaged is a flight status check, not a data item to tune. Verifying only the channel ID leaves critical fixes and constraints unchecked.