EFIS Control Panel
The ILS/LS Button when pushed cycles the localizer and glideslope scales ON or OFF. It also displays:
- The ILS identifier & frequency
- ILS DME on the associated PFD if a DME is collocated
- The ILS course bar on the heading scale
- Deviation symbols are displayed when a valid ILS signal is received
The LS label may replace the ILS label on some aircraft. The ILS/LS Button illuminates green when selected ON.