Cockpit display systems and methods for performing glide slope validation processes during instrument landing system approaches

A cockpit display system onboard an aircraft, the cockpit display system comprising:

• an Instrument Landing System (ILS) receiver configured to receive Glide Slope (G/S) signals as the aircraft flies an ILS approach terminating at a destination runway;
• a cockpit display device on which a Synthetic Vision Primary Flight Display (SV-PFD) is generated;
• and
• a controller operably coupled to the cockpit display device and to the ILS receiver, the controller configured to:
• selectively perform a G/S validation algorithm to determine the validity of the G/S signals received during the ILS approach;
• and
• generate a visual alert on the SV-PFD if determining that the G/S signals are invalid.

A method carried-out by a cockpit display system including a cockpit display device, an Instrument Landing System (ILS) receiver, and a controller operably coupled to the cockpit display device and to the ILS receiver, the method comprising:

• generating a Synthetic Vision Primary Flight Display (SV-PFD) on the cockpit display including a Synthetic Vision System (SVS) scene presented from an SVS viewpoint;
• at the controller, selectively performing a Glide Slope (G/S) validation algorithm to determine whether G/S signals detected by the ILS receiver during an ILS approach are valid;
• and
• if determining the G/S signals to be valid, repeatedly refreshing the SV-PFD during the ILS approach to visually adjust a vertical component of the SVS viewpoint in accordance with the G/S signals.