What counts as an advertised event, and where its boundary is

Know the three elements of the definition, what the boundary of an event is when there is no fence around it, and why the boundary rather than the crowd is what the certificate requirement is measured from.

• You know the aircraft's operating weight, because the lightest aircraft is not exempt here. CAR 903.01
• You know the operation is outdoors, because an indoor event is not an advertised event under the definition. CAR 900.01
• You know where your flight will be relative to the people attending, since the distance to the boundary decides whether a certificate is needed at all. AIM 3.2.29

Section 900.01 defines an advertised event as an outdoor event that is advertised to the general public, including a concert, festival, market or sporting event. CAR 900.01

Three things have to be true at once: it is outdoors, it is advertised, and it is advertised to the general public. A private gathering announced only to invited guests is not one; a street market announced in local media is. CAR 900.01

The AIM adds a case the definition does not name: an amusement park is also considered an advertised event. AIM 3.2.29

The boundaries of an advertised event are defined by perimeter fences and the gates where people are controlled by event personnel, volunteers, security guards or peace officers. AIM 3.2.29

Many outdoor events have no such perimeter at all — the AIM lists marathons, triathlons, cycling, swimming, skiing, fishing derbies, sailing, cruise ships, fireworks, protests and picket lines. Where none is defined, the boundaries are expected to be at least 100 ft from the people participating in the event and 100 ft from the track of the sporting event, for all categories of pilot certificate and models of RPA. AIM 3.2.29

That last phrase matters: the 100 ft expectation is not relaxed for a lighter aircraft or a lower certificate level. AIM 3.2.29

An SFOC—RPAS for an advertised event is needed when a pilot is operating an RPA less than 100 ft away from the boundaries of an advertised event. AIM 3.2.29

So the sequence is: decide whether the event is an advertised event, work out where its boundary is (fence and gates, or the 100 ft expectations), and then measure your operation against that line — not against the crowd. AIM 3.2.29 CAR 901.41

Since 1 April 2025, paragraph 903.01(b) requires an SFOC—RPAS for the operation of an RPA with an operating weight of less than 250 g at an advertised event. CAR 903.01

The section itself states the same thing: no person shall conduct the operation of an RPA less than 250 g at an advertised event unless they comply with the provisions of an SFOC—RPAS. It is the one place where being very light does not take the operation out of the requirement. CAR 903.01

There are two routes, and which one applies depends on what the aircraft is doing. AIM 3.2.29

The operation	The route
The RPA is a performer in a special aviation event — an "airshow"	An SFOC—RPAS for a special aviation event, under CARs 603.01 and Standard 623.01 AIM 3.2.29
The RPA is not performing — it is there to take video or photos, or for surveillance or security	The application is processed as it would be for an advertised event AIM 3.2.29

A camera flight over an airshow is therefore not an airshow participant: it is an advertised-event application. AIM 3.2.29

Question	The answer
What is an advertised event?	An outdoor event advertised to the general public — a concert, festival, market or sporting event CAR 900.01
Is an amusement park one?	Yes, the AIM says it is also considered an advertised event AIM 3.2.29
How is a boundary defined?	By perimeter fences and the gates where people are controlled AIM 3.2.29
What if there is no perimeter?	Expect boundaries at least 100 ft from participants and 100 ft from the track, for every certificate and model AIM 3.2.29
When is the SFOC needed?	When operating less than 100 ft from the boundaries AIM 3.2.29
What about an RPA under 250 g?	It needs an SFOC at an advertised event CAR 903.01

• All three elements — outdoor, advertised, general public — must hold CAR 900.01
• A marathon's boundary is not its crowd but the 100 ft expectation AIM 3.2.29
• A camera flight at an airshow is processed as an advertised event AIM 3.2.29
• Being under 250 g does not remove the requirement CAR 903.01

Symptom	Likely cause	What to do
Distance is measured from the crowd	The rule measures to the boundaries	Find the boundary first AIM 3.2.29
A marathon is assumed to have no boundary	It has an expected one	Apply the 100 ft expectations AIM 3.2.29
A sub-250 g aircraft is flown without an SFOC	Paragraph 903.01(b) reaches it	Apply for the certificate CAR 903.01
An indoor trade show is treated as an advertised event	The definition says outdoor	Check the three elements CAR 900.01
A filming flight at an airshow is filed as a performance	It is not performing	File it as an advertised event AIM 3.2.29

Practise: Ops advertised event

• CAR 900.01 — Interpretation (advertised event)
• CAR 901.41 — Advertised events
• CAR 903.01 — Prohibition
• TC AIM RPA 3.2.29 — Special Events