Where is the lavatory smoke test button located on the ERJ 175?

The lavatory smoke test button is located on the Forward Flight Attendant (FA) panel in the ERJ 175. This button is an important safety feature, allowing flight attendants to conduct a smoke detection test in the lavatory area. It helps ensure that the smoke detector system is functioning properly, which is crucial for the safety of both passengers and crew. The placement on the forward FA panel makes it easily accessible to flight attendants at the beginning of the cabin service, facilitating prompt checks of critical safety systems.

In the context of the other choices, the Aft FA panel, cockpit panel, and galley control panel do not house the lavatory smoke test button, as their functions pertain to different operations and resource management within the aircraft. The forward location is strategic for quick response in monitoring the lavatories during pre-flight checks.