Which of the following is NOT a marked thrust lever position?

• A. OFF
• B. IDLE
• C. NORM T.O.
• D. AUTO.

Answer: (D)

The main idea is that the thrust levers in this aircraft have fixed, labeled detents that indicate standard operating positions. The marked positions you’d expect to see are OFF, IDLE, and NORM Takeoff. These are physical stops or notches you can feel and set manually.

AUTO isn’t one of those detents. It refers to a mode of the autothrottle system, not a specific lever position you would lock the levers into. You can have the autothrottle managing thrust while the levers sit in the NORM Takeoff position, but there isn’t a separate “AUTO” notch on the lever itself. That’s why AUTO is not a marked thrust lever position.

So OFF means engines shut down, IDLE is the minimum thrust for taxi or idle, and NORM T.O. is the normal takeoff thrust setting. AUTO describes a control mode, not a lever position.