You have to be below the glideslope when you catch the localizer, otherwise the system won’t work right. Otherwise, the autopilot would potentially have to enter a steep dive to intercept the GS from above, which wouldn’t be safe.
You have to be below the glideslope when you catch the localizer, otherwise the system won’t work right. Otherwise, the autopilot would potentially have to enter a steep dive to intercept the GS from above, which wouldn’t be safe.