What is the FMA thrust mode when LVL CHG is selected for a climb?

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Multiple Choice

What is the FMA thrust mode when LVL CHG is selected for a climb?

LVL CHG as a climb uses a fixed thrust reference rather than trying to hold a speed. When you select LVL CHG, the autothrottle sets and maintains a specific N1 value to produce the climb thrust needed while the airplane pitches to achieve the level change. That’s why the thrust mode shown in the FMA is N1. Other options don’t fit because MCP SPD would indicate a speed-hold thrust target, N2 is not the standard thrust reference used here, and LVL CHG is a vertical mode name, not the thrust reference itself.

LVL CHG as a climb uses a fixed thrust reference rather than trying to hold a speed. When you select LVL CHG, the autothrottle sets and maintains a specific N1 value to produce the climb thrust needed while the airplane pitches to achieve the level change. That’s why the thrust mode shown in the FMA is N1. Other options don’t fit because MCP SPD would indicate a speed-hold thrust target, N2 is not the standard thrust reference used here, and LVL CHG is a vertical mode name, not the thrust reference itself.

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