Which USB port is present on the 1L/4L FA panel?

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Multiple Choice

Which USB port is present on the 1L/4L FA panel?

Explanation:
The USB port on the 1L/4L Flight Attendant panel is a maintenance interface. It’s provided so technicians can connect diagnostic tools, retrieve fault data, and load software updates without using passenger-facing systems. It isn’t a power outlet for passengers or crew devices, nor is it used to control entry/cabin lighting or cabin temperature from the FA panel. Those functions are handled by their respective controls elsewhere. So the maintenance USB port is the one designated for maintenance-only use.

The USB port on the 1L/4L Flight Attendant panel is a maintenance interface. It’s provided so technicians can connect diagnostic tools, retrieve fault data, and load software updates without using passenger-facing systems. It isn’t a power outlet for passengers or crew devices, nor is it used to control entry/cabin lighting or cabin temperature from the FA panel. Those functions are handled by their respective controls elsewhere. So the maintenance USB port is the one designated for maintenance-only use.

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