Final answer:
To cancel IFR and land visually in a Control Zone, pilots must meet certain minimums, including visibility distance and cloud clearance requirements.
Step-by-step explanation:
In order to cancel Instrument Flight Rules (IFR) in a Control Zone and continue to landing visually, the minimums must be met. The specific minimums required may vary depending on the airspace and airport, but generally, the pilot must be able to see and maintain visual reference to the ground or runway. Typically, a minimum visibility distance and cloud clearance requirements are defined to ensure safe visual landing.
For example, in the United States, when canceling IFR in Class D airspace, the minimums are typically 1 statute mile visibility and clear of clouds.
It's important for pilots to always consult the local aviation regulations and air traffic control communication for the specific minimums in a given Control Zone.