The Incident as a Situational example

You are first officer on a transcontinental flight. Just prior to departure, the captain says he isn’t feeling fully fit but is well enough to fly. There is no problem up to and during cruise, and you start the descent early in the approach with sunrise just appearing. You are cleared through 10,000 ft, engine and wing anti-ice are turned on as the airplane enters clouds. The captain, as pilot flying (PF), selects anti-icing “on” appropriately, and the airplane is cleared for further descent, autopilot on, speed still at 250 kt. Passing through 8,000 ft, the captain asks you to go on the intercom to request that the cabin be prepared for landing.