Required System Risk Ratio in Class G Remote Airspace

Verified from official sources
Standard 922Version 1Effective -Verified 23 August 2026

In plain language

When flying below 400 feet AGL in Class G airspace and more than 5 nautical miles away from any airport, heliport, or aerodrome listed in the CFS/WAS, your RPAS must meet a system risk ratio of 0.66 or less.

Requirement as structured

The RPAS must have a system risk ratio of 0.66 or less (ARC-b) when operating below 400 feet AGL within Class G airspace and greater than 5 nautical miles from any airport, heliport, or aerodrome published in the CFS/WAS.

Original regulatory text

Below 400ft AGL, within Class G Airspace and greater than 5nm from any airport, heliport or aerodrome published in the CFS/WAS. ARC-b <=0.66

Applies when

country
Canada
airspace class
Class G
max altitude agl ft
400
regulatory category
Specific