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[Audio] Mode 2 warns the flight crew of excessive closure rates with rapidly rising terrain. It triggers aural and visual alerts, based on the landing gear/ flaps configuration of the aircraft, the radio height, and the RA rate of change. There are two types of Mode 2 alerts; Mode 2A (active during climb, cruise, and initial approach) and Mode 2B (active during approach and 60s after takeoff). Mode 3 warns the crew of inadvertent decants, and loss of altitude after takeoff, or during missed approach If the aircraft descends during the initial takeoff climb or during a go around, the PULL UP light comes on and the aural alerts " DON'T SINK" sounds repeatedly..