To fly a full ILS approach with glideslope, you should select the NAV mode of the FCP.

• A. TRUE
• B. FALSE
• C. NAV mode with ILS
• D. LOC mode

Answer: (B)

When flying an ILS approach with a glide slope, you need modes that actively guide you along the localizer first and then along the glide path. NAV mode is a general navigation mode that follows the chosen nav source, but it doesn’t specifically engage localizer capture or glide-slope guidance by itself. To properly fly the full ILS, you typically switch to LOC mode to pick up and track the localizer, and once established, arm the approach (or use the appropriate APP/GS mode) to capture and fly the glide slope.

So, selecting NAV mode won’t guarantee a full ILS with glide slope; LOC mode is the correct choice to pursue the localizer, followed by the approach mode to capture the glide slope.