For a jammed spoiler, the indicated approach speed should be VREF + 10 KIAS.

For a jammed spoiler, the indicated approach speed should be VREF + 10 KIAS.

• A. VREF
• B. VREF + 20 KIAS
• C. VREF + 5 KIAS
• D. VREF + 10 KIAS

Answer: (D)

When a spoiler is jammed, you lose normal lift-dump and handling characteristics, so you need a little extra lift margin and stability on final approach. VREF is the speed you target for a normal landing in the landing configuration, and adding a small margin helps ensure you won’t stall or lose control if the wing’s lifting capability is degraded by the malfunction. The standard adjustment is to fly at VREF plus 10 knots, which provides enough margin without making the approach too fast to manage. VREF alone wouldn’t give sufficient margin if lift is compromised; VREF plus 5 knots is a bit too close to the edge for safety; and VREF plus 20 knots adds unnecessary energy and could complicate the flare and rollout.

When a spoiler is jammed, you lose normal lift-dump and handling characteristics, so you need a little extra lift margin and stability on final approach. VREF is the speed you target for a normal landing in the landing configuration, and adding a small margin helps ensure you won’t stall or lose control if the wing’s lifting capability is degraded by the malfunction. The standard adjustment is to fly at VREF plus 10 knots, which provides enough margin without making the approach too fast to manage.

VREF alone wouldn’t give sufficient margin if lift is compromised; VREF plus 5 knots is a bit too close to the edge for safety; and VREF plus 20 knots adds unnecessary energy and could complicate the flare and rollout.