Final answer:
The tail servo and back-up pump switches are generally found in the aircraft's cockpit, whether on the overhead panel or center console, depending on the aircraft model. It's vital to refer to the aircraft's operating manual for precise locations.
Step-by-step explanation:
The tail servo and back-up pump switches are typically located in the cockpit of an aircraft, specifically on the overhead panel or in the center console. In helicopters, the tail servo is part of the tail rotor control system, which tilts the pitch of the tail rotor blades, and its switch is used to adjust or disable the servo mechanism. The back-up pump, on the other hand, is typically included in hydraulic systems as a redundancy feature, and its switch activates the secondary pump in case of a failure in the primary hydraulic system.
On fixed-wing aircraft, these switches may be located in a similar area or on a dedicated hydraulic or electrical system panel, depending on the aircraft's design and manufacturer. Since the location can vary widely among different aircraft models, consulting the specific aircraft's operating manual or cockpit diagrams is essential for an exact answer.