Class C4 Controllability and Maneuverability

Verified from official sources
Part 5Part 5Version 1Effective -Verified 22 August 2026

In plain language

The drone must be safely controllable by you following the manufacturer's instructions, even if one or more systems fail.

Requirement as structured

A class C4 UAS must be safely controllable and manoeuvrable by a remote pilot following the manufacturer's instructions under all anticipated operating conditions, including system failures.

Original regulatory text

be safely controllable and manoeuvrable by a remote pilot following the manufacturer's instructions, as necessary under all anticipated operating conditions including following the failure of one or, if appropriate, more systems;

Applies when

operation
UAS product requirements
class marking
C4
regulatory category
Open