What is the normal descent speed?

What is the normal descent speed?

• A. .70 Mach or 250 Knots
• B. .74 Mach or 290 Knots
• C. .77 Mach or 320 Knots
• D. .74 Mach or 300 Knots

Answer: (B)

Normal descent speed is the speed you hold to descend in a stable, efficient way and to keep good control margins for the approach. For the CRJ-550, the standard target is Mach 0.74, which roughly translates to about 290 knots indicated airspeed. This pairing balances smooth, predictable descent with enough energy reserves for maneuvering, ensures you stay in a comfortable envelope for engine performance and handling, and provides adequate room for configuring flaps and meeting approach performance requirements. In other words, Mach 0.74 (about 290 knots) is the speed that crews use as the go-to descent profile during normal operations. The other options either imply speeds that are too slow or too fast for a typical descent, or mix speeds that don’t align with the aircraft’s standard descent profile.

Normal descent speed is the speed you hold to descend in a stable, efficient way and to keep good control margins for the approach. For the CRJ-550, the standard target is Mach 0.74, which roughly translates to about 290 knots indicated airspeed. This pairing balances smooth, predictable descent with enough energy reserves for maneuvering, ensures you stay in a comfortable envelope for engine performance and handling, and provides adequate room for configuring flaps and meeting approach performance requirements. In other words, Mach 0.74 (about 290 knots) is the speed that crews use as the go-to descent profile during normal operations. The other options either imply speeds that are too slow or too fast for a typical descent, or mix speeds that don’t align with the aircraft’s standard descent profile.