Hello MD11 Drivers,

 

shortly after take off (at about 800-1000 ft AGL) I engage Level change as a vertical mode. This triggers AT to change immedeately from TO Power to CL Power. Why does it do so? The manual states that whenever you engage Level change before reaching climb thrust altitude set in the FMC (e.g. 1500 ft AGL) this solely arms the system to change automatically from take off power to climb power at climb power altitude. Am I wrong?  Thanks in advance,

 

josch

Hmm great question. Need to try this.

 

EDIT: I see the same thing - immediate transition to CLB thrust, but only above 400 ft. Maybe the manually is insufficiently clear on exactly when this arms vs. activates?

 

Let me try something else...

 

Best regards,

Robin.

Hi,

 

EDIT: Pulling of ALT knob above 400 ft results in immediate transition to CLB thrust.

 

Best regards,

Robin.