Which systems require ongoing monitoring during descent and approach on the Longitude 700?

• A. Engine parameters, air data, autopilot/flight director, altitude/vertical speed, landing gear status, airspeed
• B. Cabin temperature only
• C. Radio tuning only
• D. Fuel quantity only

Answer: (A)

The main idea is that during descent and approach you must continuously monitor several critical flight systems to stay on the correct path and be ready for any change in the situation. Engine parameters give early warning of any power or temperature issues that could affect the ability to land or execute a go-around if needed. Air data keeps you aware of your actual airspeed, altitude, and vertical speed, which are essential for a stable approach and proper glide path; any failure here can lead to incorrect guidance and unsafe descent. The autopilot and flight director need close watching to ensure they’re correctly guiding you along the approach profile and to allow immediate manual control if automation behaves unexpectedly. Monitoring altitude and vertical speed helps you maintain the proper descent rate and ensures you can capture the glideslope at the right point. Landing gear status is critical to confirm the gear is down and locked before landing, avoiding a surprise gear issue in the final phase. Airspeed is also key to stay within safe margins and prevent stall or overspeed near the ground.

Items like cabin temperature, radio tuning, or fuel quantity, while important for comfort or overall efficiency, do not provide the same direct, immediate safety cues during descent and approach as the systems listed above.