Final answer:
Chocks are used to prevent aircraft from moving and ensure safety while an aircraft is parked or during ground operations. It's crucial to always chock equipment around an aircraft.
Step-by-step explanation:
You should always chock equipment around the aircraft. 'Chock' refers to the process of placing wedges of sturdy material (known as chocks) in front of and behind the wheels of a vehicle or equipment to prevent the object from moving. To maintain safety and prevent unintentional movement, it is essential to use chocks whenever an aircraft is parked, during loading and unloading, maintenance, or any time the aircraft is stationary on the ground. Forgetting to chock can result in a safety hazard, potentially causing damage to the aircraft, injury to personnel, or interference with airport operations.