Which GPWS mode is associated with unsafe terrain clearance while in landing configuration?

• A. Excessive descent rate
• B. Unsafe terrain clearance while in LDG config
• C. Altitude loss after TO or GA
• D. Below GS deviation

Answer: (B)

GPWS uses different alerts for different flight phases, and one is specifically triggered during approach and landing when terrain would be unsafe given the aircraft’s landing configuration. This warning looks at the aircraft’s altitude and proximity to surrounding terrain while the gear is down and flaps are extended, and it alerts you if terrain would not be safely cleared on final. That makes it the best fit for “unsafe terrain clearance while in LDG config.” The other alerts cover different situations—descent rate that's too steep, altitude loss after takeoff or go-around, or being below the glide slope—scenarios not about unsafe terrain clearance during landing.