is for operations with an unmanned aircraft system (UAS) weighing less than 25
kg and includes virtually all amateur pilots, as well as several professional
pilots. All operations in this category are classified as low risk. The Open
category comprises three subcategories:
subcategory is for class C1 UAS.
subcategory is for class C2 UAS.
The different UAS
classes are defined as follows:
C1: Micro UAS weighing
between 250 g and 900 g