When should brake tests be performed relative to tow operations?

• A. Before movement, as part of the brake verification.
• B. After launching the aircraft into flight.
• C. Only during heavy rain.
• D. After taxiing out onto the ramp.

Answer: (A)

Brake verification must be completed before any tow movement to confirm the braking system is functioning properly and ready to control the aircraft during tow. Performing the test pre-movement ensures brakes apply and release correctly, hold when commanded, and that there are no leaks or binding. This early check catches issues before you start moving, preventing unsafe tow conditions on the ramp and giving you reliable braking control during maneuvering.

Waiting until after movement, or limiting testing to adverse weather, or performing it only after taxiing onto the ramp, fails to provide timely assurance and could leave the tow operation unsafe or unmanageable.