Hangar belongs to NT Air, aka Northern Thunderbird Air Inc. and Mountain Thunderbird Air which operate 11 aircraft from King Air 100, 350, Beechcraft 1900D, Cessna Caravan,Twin Otter and Dornier 328.
Airport is in Prince George BC, about 470 miles North of Vancouver. It is unknown which aircraft if any, where in the hangar.
Northern Thunderbird Air Hangar Fire- Customer Information
Saturday Dec 19. 2009
Northern Thunderbird Air has experienced a fire at our Prince George location.
Management is working on restructuring and our intentions are to continue operations as normal and on time. Please continue to check our website or call us at 1-800-963-9611 for information on scheduled flights,charter flights and operational change details.
We will do our best to keep everyone updated with the most current information.
WOW, nice photos!
Sad to see something like this happen though.
Aerial video coverage Click Here
Reports so far; aircraft inside the hangar at the time the fire started, where all removed to safety.
More info and pictures at FlightSource http://www.flightsource.ca/blog/flightdeck/?p=1180
WOW… 
Once it got going it just erupted!
Maybe the metal finally started burning.
Taxi to parking, monitor ground point niner.
Do you think the girders were wood or metal? I’m pretty sure the last I checked metal don’t burn.
Something very interesting about this: Why was the sprinkler system NOT activated. (It appears it wasnt) And Aircraft Hangars have FD connections for crash trucks to arrive and augment the system for a possible major conflagration such as this.
Metal will burn somewhere around 1300 degress…you’ll have fatigue.
Aluminum (Aircraft) will burn and melt in the vicinity of 1000 degress. Its been a few years for me…but I’m in the ball park.
Btw your A/C rims which are made of Magnesium will also burn. And they are a bitch to put out. So watch them “hot brakes” jet jocks. 
ALAS IT IS a wood structure!!! Holy Hell in this day and age…you would think they would’ve condemned it.
“The wood building dates back to the World War II era, and contains several businesses as well as aircraft”
Au contraire. Metals such as magnesium and aluminum can burn vigorously, and the introduction of water can set off explosions.
Click on “Product Demonstrations” at the top of the page and in the left column, you will see “metal burning”.
Water on Aluminum or steel is not really the issue. We used AFFF (Aqueous Film Forming Foam) mixed with water with everything (except electrical/avionics,then Halon 1301 is used for those instances inside cockpits). Its when you solid stream a wheel hub/rim that is burning (magnesium) that you’re gonna have some shrapnel go thru your proximity suit. Makes for a bad day.
So the next question; how do you put them out (did…things may be a little different now) You set the nozzle on fog pattern and cool it down. (Strictly water, no AFFF)
Spray Arctic Fire Freeze on it…
Well, at least that is what the videos say to do.
This reminds me of a hangar fire in Calgary or Edmonton years ago.
Business is down, sell it to the insurance company 
Maybe Prince george will smell like a campfire instead of a giant arse for a few days…
That’s a bad fire right there… Years ago a big hanger at CXO burned to the ground (it was made out of wood) Cessna’s Beechcrafts and a T-6 were all in it… 
