The Zero Pitch Line is drawn completely across the display and represents the aircraft attitude with respect to the horizon. With synthetic vision enabled, it may not align with the terrain horizon, particularly when the terrain is mountainous or when the aircraft is flown at high altitudes.

Horizon Heading marks are able to be enabled or disabled by the pilot on the Zero Pitch Line to aid in situational awareness. Major tick marks are displayed with numerical values (in degrees) every 30°. Minor tick marks are displayed with no numerical indications on the Zero Pitch line every 10°.