A – Fixed – Structure or solid object where the drone should not get closer than 0.5m from the object (e.g. building, cliff, installation)
B – Object – wind movable hazard where the drone should allow 1m tolerance around the object in case it moves (e.g. power line, tree, flag, antenna)
C – Corridor – area with unpredictable traffic with 2m tolerance left around the area – to allow for large trucks or trains (e.g. train/tram lines, highways or roads, air corridor)
D – Do not fly over – area where flight is not permitted by law, such as with an official 2.5km exclusion at ground level, 8km at 120m altitude (e.g. airport, military/government location, firing range). Only commercial users and authorities can submit data in this category and this category is considered to be at the highest trust level.
E – Exclusion zone – fly-over not permitted due to privacy request, 50m exclusion of the polygon area to be honoured (e.g. nudist beaches, private residences, concerts & events – by request only, can be ignored by official government / military / safety & security / Police). Expires every 36 months if not renewed, can be specified to expire any time within the 36 month auto-expiry
F – Fan or air movement, requiring 2m exclusion of hazard (e.g. air conditioner condenser, extraction fans, chimneys, wind turbines, volcano, known thermal rises) could also be area of signal interference / blackspot / no GPS signal
G – Ground Hazard – area where landing would be hazardous, 10m altitude max for polygon (e.g. lake, river, power substation, inaccessible area such as wilderness or wasteland, zoo)
H – Temporary – hazard that does not always exist – 200m exclusion of polygon to be assumed (e.g. construction crane, temporary structure)
I – ICAO flight plan, or other local jurisdiction flight plans
J – reserved for future use
K – Other hazard
L – Land level – the location of the ground level. This is the only hazard type submission that can be a single point with just Longitude, Latitude and Altitude.