Which designation corresponds to the Aft door, aircraft left?

• A. L1
• B. L2
• C. Overhead Bin
• D. Aft door, aircraft left

Answer: (D)

Door designations identify location by side and position on the fuselage: left (aircraft left) refers to the port side, and forward or aft shows whether a door is toward the nose or tail. The correct choice uses a precise description of the location: it names the rear door on the left side of the aircraft. That specificity is why it’s the best pick—the other options point to doors further forward on the left side (L1, L2) or describe a non-door item (Overhead Bin). In short, the aft door on the left side is the only option that accurately designates the described location.