The alerts 'RS Roll/ Cross Roll Exceeds TOL' & 'RS DO 0 DEG SLEW- TAB 9' indicate

• A. Radar is reinitialized
• B. Switch to standby mode
• C. Target tracking failure
• D. The change in Radar Roll/Cross Roll requires a zero degree slew and database update.

Answer: (D)

When the radar’s orientation is off, the system can’t rely on its internal reference for tracking. A roll or cross-roll that exceeds tolerance means the antenna’s actual angle no longer matches what the onboard guidance expects, so automatic tracking data would be unreliable. The fix is to re-establish a known reference by slewing the radar to 0 degrees, which re-anchors the antenna boresight to a standard position, and then refresh the stored geometry in the radar database so all tracking and target cues align with the new orientation. This combination ensures the radar’s steering and the fire-control data stay accurate going forward. The alerts aren’t indicating a full reinitialization, standby mode, or an outright tracking failure; they point to the need for a zero-degree slew to re-reference the radar and update the database accordingly.