Plane Crash

[Frisk]

http://www.castanet.net/edition/news-story-178270-1-.htm#178270

http://www.castanet.net/edition/news-story-178280-1-.htm#178280

Sad news. Condolences to the victims families.

[60-YEARS-in-Ktown]

Sad news, some reports say Jim Prentice former Alberta premier was abourd., not yet confirmed.
Looks like it happened in or near Fir Valley.

[Atomoa]

Weather was bad in that area last night.

I was watching the Silver Star radar periodically last night.

[AirHoss]

Weather was bad in that area last night.

I was watching the Silver Star radar periodically last night.

Silverstar has radar? link?

[mem]

I am shocked and saddened by this. Jim dedicated his life to serving the people of his province and his country. We truely has lost a good man......

[Symbonite]

When was the last big plane crash aroung ylw? I dont know of any that comes to mind until last nights crash. Wheather was brutal and windy here. Im surpr8sed that someone would take off in that last night.

Saying thatn they dropped 4000 ft in the last 20 seconds would mean they were in a strait nosedive for sure.

Well i guess we will find out.

[Atomoa]

Silverstar has radar? link?

https://weather.gc.ca/radar/index_e.html?id=XSS

[TylerM4]

Sad news, some reports say Jim Prentice former Alberta premier was abourd., not yet confirmed.
Looks like it happened in or near Fir Valley.

Now confirmed.

To me it looks a little east of Fir Valley. My guess is that it came down a little closer to the Oceola Fish and Game Club's shooting range(just past 2nd cattleguard on your way up the FSR), but I must admit I'm not sure where the eastern border of Fir Valley is and perhaps the gun range is considered part of it.

[AirHoss]

link

Thank you

[Gixxer]

*removed*

[AirHoss]

*removed*

[Dizzy1]

When was the last big plane crash aroung ylw? I dont know of any that comes to mind until last nights crash. Wheather was brutal and windy here. Im surpr8sed that someone would take off in that last night.

Saying thatn they dropped 4000 ft in the last 20 seconds would mean they were in a strait nosedive for sure.

Well i guess we will find out.

The last (and only) fatal accident I can think of off the top of my head with an aircraft departing or arriving at YLW was back in the 90s when a Piper Navajo (IIRC) hit the side of Terrace Mountain killing both crew members. There have been several involving injuries, but I can't think of any more fatal ones.

Weather wise - we'll have too see if that plays a determining factor or not - other aircraft left/arrived without any issues - I don't know if any PIREPS (Pilot Reports) were called out.

Looking at the data from flightaware, they climbed up to 7000ft at around 3000ft a minute (which is typical for a Citation), however, the airspeed was steadily decreasing (although not close to stall speed) and then the aircraft started a descent at a rate of 2200ft/min, which is quite a normal descent.

Now, how accurate that is, I don't know, but those parameters in themselves show nothing unusual in themselves, other than the obvious fact is why the climb was stopped and the aircraft started to descend in an area of high terrain.

https://flightaware.com/live/flight/CGT ... W/tracklog

[westbankkid]

From this article they say it is a possibility of icing...

http://www.castanet.net/edition/news-st ... htm#178291

[Dizzy1]

From this article they say it is a possibility of icing...

http://www.castanet.net/edition/news-st ... htm#178291

Was just going to post that link.

Icing is aways a very strong possibility. Not only ice on the wings, which increase drag and reduces lift causing an aerodynamic stall being a possibility in a crash but icing of the pitot tubes and static ports can also cause a crash by plugging them up and giving false information to the pilots in relation to airspeed and/or altitude. Of course, this all depends on what kind of back up systems are present on the aircraft and how well the crew process the possible false information. But in a worst case scenario, the airspeed indicator would act as a vertical speed indicator, so your airspeed would appear to be increasing which in reality it is decreasing, causing the pilot to believe the aircraft was too fast and then reducing power and/or climbing - reducing the airspeed further (despite the airspeed indicator saying its increasing) causing the aircraft to go into a stall. Which in IMC (Instrument Meteorological Conditions) or in hours of darkness when you have no reference to the horizon, can happen very quickly.

Thats the thing with airplane crashes, there are so many factors involved - investigators really do an absolute amazing job piecing every thing together.
Looking at the crash site, it is a very small footprint so that would suggest it was a sudden impact as opposed to a larger footprint that would have been left by a more controlled flight path or inflight breakup.

Looking at the photos, it appears the aircraft in question had inflatable boots installed - what these do is when ice present and the system is activated, air is pushed into the leading edge of the wings and horizontal/vertical stabilizer and the boots inflate, breaking off any ice on the airfoil. I am unfamiliar with the aircraft in question itself, just basing that assumption on the photos and what I know about Citations in general.

[Dizzy1]

And just to be clear, I'm not speculating anything on the cause - I'm merely sharing information that I've found, such as the flightaware data and explanations of what could happen in certain situations such as icing and how some systems/procedures are designed to work.