If an excessive V/S is selected during a climb, what happens as the speed approaches minimum?

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Multiple Choice

If an excessive V/S is selected during a climb, what happens as the speed approaches minimum?

When you command an excessive vertical speed in a climb and the airspeed begins to fall toward the minimum, the system switches to protect against underspeed. The underspeed condition is signaled on the MCP IAS/Mach display so you’re aware speed is approaching a limit where control could be compromised. To avoid continuing the climb in a condition that could stall the wing, the AFDS reverts from VNAV PTH to LVL CHG. Level Change stops climbing and holds or reduces the pitch demand, allowing airspeed to recover instead of letting it fall further. In short, the symbol warns you and the system shifts to a safer mode to prevent losing speed, rather than continuing the climb with an aggressive vertical speed.

When you command an excessive vertical speed in a climb and the airspeed begins to fall toward the minimum, the system switches to protect against underspeed. The underspeed condition is signaled on the MCP IAS/Mach display so you’re aware speed is approaching a limit where control could be compromised. To avoid continuing the climb in a condition that could stall the wing, the AFDS reverts from VNAV PTH to LVL CHG. Level Change stops climbing and holds or reduces the pitch demand, allowing airspeed to recover instead of letting it fall further. In short, the symbol warns you and the system shifts to a safer mode to prevent losing speed, rather than continuing the climb with an aggressive vertical speed.

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