Prime Minister Justin Trudeau says there are “very good questions” being asked about the safety of the Snowbirds, after a deadly crash in Kamloops on Sunday.

It was second crash involving a Snowbirds plane since October, which has raised questions about whether the two incidents are related to the team’s 57-year-old Tutor planes.

Trudeau says the government will not jump to conclusions, and instead will allow the Royal Canadian Air Force to conduct a  “proper” investigation. That investigation could take up to a year, although some preliminary findings could be released in a month.

Snowbirds’ public-affairs officer Capt. Jennifer Casey was killed while Capt. Richard MacDougall, the pilot, was taken to hospital with serious but non-life threatening injuries.

The squadron’s Commander Lt.-Col. Mike French said on Monday that while the Tutor jets may be old, they are rebuilt about every two years and are also subject to regular maintenance and checks prior to every flight. French too, would not speculate on the cause of the crash.

A few hundred Kamloopsians gathered at a memorial by the airport on Victoria Day Monday to honour Capt. Jennifer Casey and the rest of the Snowbirds team.