Aircraft service lights are usually located in two places, identified by humanoid signs:

1, set above the seat. The specific layout of different models may be different, but they are all similar, as shown in the following figure:

The upper left corner is the reading light switch, the upper right corner is the maintenance light, the lower left corner is the reading light, and the lower right corner is the air conditioning outlet adjustment.

2. Some models are set on the left or right side of the seat, as shown in the following figure:

On the far left is the maintenance light.