When can cockpit personnel apply the brakes during a towing evolution?

• A. At their discretion.
• B. Only during engine start.
• C. When directed by the ramp supervisor.
• D. Never.

Answer: (A)

During towing, the cockpit crew must control the aircraft’s movement with precise speed and stopping power. Brakes are a key tool for that control, allowing the pilot to slow or halt the aircraft as needed to maintain alignment, prevent creeping on a grade, or respond to tug and ground crew cues. Because conditions can change rapidly during tow—wind, slope, or steering quirks—the pilot’s judgment is essential, so braking can be applied as needed at the crew’s discretion rather than waiting for a specific instruction every time.

That’s why applying the brakes at the pilot’s discretion is the best choice. It recognizes the pilot’s responsibility to maintain safe, controlled movement during tow and to respond to evolving situations on the ramp. The other options imply timing or necessity that aren’t required; braking isn’t limited to engine start, isn’t something done only when told by the ramp supervisor, and certainly isn’t never.