Final answer:
In the event of visible ice accretion, pilots should adhere to safety protocols by activating deicing systems, following the Flight Operations Manual for severe icing conditions, and increasing approach and landing speeds to mitigate the effects of ice on aircraft lift.
Step-by-step explanation:
When there is visible ice accretion on the Visual Ice Indicator or if the SEVERE ICE DETECTED ECAM message is displayed, pilots should select an option for landing that ensures the highest level of safety. This typically involves activating deicing and anti-icing systems, consulting the Flight Operations Manual for specific procedures related to severe icing conditions, and choosing a flap setting that is recommended for such scenarios. It is crucial to increase the approach and landing speeds to compensate for the potential loss of lift due to ice buildup. Pilots may also need to select an alternate runway with better equipment for dealing with icing conditions or to divert to an alternate airport.
Landing with ice accretion can be hazardous as it alters the aerodynamic properties of the aircraft, which can lead to a loss of lift and control issues. Therefore, appropriate precautions must be taken to ensure a safe landing. The specific procedures are often dictated by the aircraft's operating manual and relevant regulatory guidelines.