So where does my drone lie according to Belgian law? In which category? The criteria that determine your drone is dependent on the weight and purpose of use.

Private use (Recreation)

• You should not exceed 10 meters (32.8 ft) high. 
• Only fly on private terrains such as your farm, backyard or property.
• The drone must weigh less than 2.2 lbs (1 Kg). 
• Remain within your line of sight 
• Fly during the day.
• Open to all ages

Model aircraft (Recreation)

• Model aircraft have a take-off weight between 1 Kg (2.2lbs) and 150 Kg (330 lbs)
• Remain within line of sight. 
• Open to all ages

Class 2  (Commercial)

This is the low-risk category as users:

• Limit their drone flight to 45 meters (150 ft) outside controlled airspace or residential communities. 
• Fly the drone during the day
• Remain within line of sight
• The pilot must be at least 16 years old.

Class 1a operations (Commercial)

This is the moderate risk drone category where users:

• Fly their drones on controlled airspace up to 90 meters (300 ft).
• If your flight path comes within 50 meters of goods and people. 
• The pilot must be 18 years old
• Need a certificate of competence

Class 1b operations (Commercial)

This category is of high risk. That being so, users:

• Fly their drone 90 meters (300 ft) above ground.
• Do not go anywhere 50 meters(164 ft) from people/goods
• Limit operations to daytime. 
• Weigh less than 150 Kg (330 lbs)
• Maintain a direct line of sight
• The drone pilot must be 18 years old.
• Need a drone pilot license
• Need a drone conformity certificate

Any other operation missing from this list should be regarded as a class A operation.