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How effective are avalanche airbags?

  • Donnelly_M
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12 Mar 2017 17:59 - 12 Mar 2017 18:11 #229191 by Donnelly_M
How effective are avalanche airbags? was created by Donnelly_M
Considering I do a lot of solo skiing and feel a need to start switching my skiing up by doing more off piste skiing, I figure my best option is to have an avalanche airbag. How effective are these devices? Could they also help protect the individual from a massive fall over rocks?  From this video, it looks like a worthy investment. I figure with no wife and or kids, I might as well start skiing as such!lol

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  • Charlie Hagedorn
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20 Mar 2017 11:26 #229276 by Charlie Hagedorn
Replied by Charlie Hagedorn on topic Re: How effective are avalanche airbags?
Here's a good way to get an introduction into one of the better studies on the subject:

www.wildsnow.com/18262/avalanche-airbag-statistics-metrics/

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20 Mar 2017 12:46 #229277 by sgertz
Replied by sgertz on topic Re: How effective are avalanche airbags?
I have a BCA Float 42 that I use most days I go out, and I love it. However, I will say that when I consider terrain, I still ski conservatively. My understanding is that airbag packs don't protect you from hitting trees, or being swept off of cliffs. The only airbag packs that do anything to protect you from trauma are the Mammut Protection packs, and they only protect your head. It's still very possible to get smashed into a tree, etc and break bones, or other sustain other injuries.

I believe most airbags inflate to a volume of approx. 100-150L

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  • aaron_wright
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20 Mar 2017 15:36 #229279 by aaron_wright
Replied by aaron_wright on topic Re: How effective are avalanche airbags?

An airbag deployment most likely saved the life of a skier in that tunnel creak avalanche.

Do you think so? She wasn't found very far from the other skiers that died from unsurvivable trauma. Do you think that she might have been extremely lucky?

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20 Mar 2017 18:06 #229283 by rlsg
Replied by rlsg on topic Re: How effective are avalanche airbags?
Seems there was a fatality from avalanche at Crested Butte back a year or so? The person had an airbag pack on and apparently the avalanche total destroyed the bag. Probably works more times than not I'm guessing, though...

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  • BCSchonwald
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20 Mar 2017 19:39 #229284 by BCSchonwald
Replied by BCSchonwald on topic Re: How effective are avalanche airbags?
The airbags are effective when there is little to no consequences of trauma(trees, over cliffs, into rocks..). They are effective in preventing full burial and the only tool that can help with that.
www.ncbi.nlm.nih.gov/pubmed/24909367

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  • flowing alpy
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21 Mar 2017 06:30 #229289 by flowing alpy
Replied by flowing alpy on topic Re: How effective are avalanche airbags?
That's gonna mess with the aerodynamics
in pursuit of your Olympic downhill dream
imho.

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  • gravitymk
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21 Mar 2017 11:02 - 21 Mar 2017 17:31 #229292 by gravitymk
Replied by gravitymk on topic Re: How effective are avalanche airbags?

The airbags are effective when there is little to no consequences of trauma(trees, over cliffs, into rocks..). They are effective in preventing full burial and the only tool that can help with that.
www.ncbi.nlm.nih.gov/pubmed/24909367


Terrain traps are a known exception to this statement.

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  • aaron_wright
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21 Mar 2017 11:55 #229294 by aaron_wright
Replied by aaron_wright on topic Re: How effective are avalanche airbags?

yea- she was lucky, but the airbag may have kept her near the surface and therefore she may have avoided the main energy of the washing machine effect of being way down in the debris flow.

hard to know for sure, but i believe that she was found just under the surface.

i do believe, however, that once a person becomes involved in any accident, luck plays a role in the outcome.

Two of the three fatalities were near or on the surface. The woman was completely buried except for her hands and her bag was deflated.

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  • pipedream
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21 Mar 2017 23:13 #229300 by pipedream
Replied by pipedream on topic Re: How effective are avalanche airbags?
Avy airbags are a last resort tool that by the time you've deployed you've bypassed several red flags and gone somewhere you shouldn't have been. I have one, it doesn't influence my decision-making on terrain based on conditions and what we've been observing. I still tour often with folks who don't have an airbag system and that also helps us make smart decisions.

About the only thing it's changed is drop ordering - usually someone with an airbag goes first and does any necessary ski-cutting since it provides a slightly higher chance survival / protection should the unforseeable happen

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22 Mar 2017 07:04 #229302 by aaron_wright
Replied by aaron_wright on topic Re: How effective are avalanche airbags?



also her head was above the surface according an article that i just read. Like i said, sounds like the airbag played a part in her survival, but hard to know for sure.

Which article? The accident report and her account say that her head was locked in the snow and she was able to brush some snow off her face, only because her arms were not buried, but could not move her head. Did you look at the pictures of the gully the victims traveled through? Her bag was deflated when she was extracted. I think she's just extremely lucky she avoided he trauma that killed her partners.

I'm not saying avalanche bags won't help you if you're caught in open terrain and I think they are worth carrying if you spend a lot of time touring above treeline.

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  • gravitymk
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22 Mar 2017 10:47 #229304 by gravitymk
Replied by gravitymk on topic Re: How effective are avalanche airbags?

Avy airbags are a last resort tool that by the time you've deployed you've bypassed several red flags and gone somewhere you shouldn't have been. I have one, it doesn't influence my decision-making on terrain based on conditions and what we've been observing. I still tour often with folks who don't have an airbag system and that also helps us make smart decisions.

About the only thing it's changed is drop ordering - usually someone with an airbag goes first and does any necessary ski-cutting since it provides a slightly higher chance survival / protection should the unforseeable happen


Gear should not influence travel/terrain selection choices period.
If you are making a choice based upon the idea that you are carrying gear to mitigate risk, then you are already playing against a staked deck. Better to look for reasons not to go, than the other way around.

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  • pipedream
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22 Mar 2017 14:20 #229305 by pipedream
Replied by pipedream on topic Re: How effective are avalanche airbags?
If we left all the safety gear in the car, we wouldn't leave the parking lot.

My comment about terrain selection stands. I don't go anywhere I wouldn't without an airbag just because I or anyone else has one. This thread reminds me of that idiot on TGR who used to post about the East Vail Chutes and how he felt it was his civic duty to cut and ride them to keep them safe for the newbies who end-up back there underequipped and underinformed about the dangers of the near-resort backcountry. He stated numerous times that he felt safe doing that solo because of his airbag and avalung systems.

You can't cure stupid, but you can refuse to follow it into the BC.

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  • Scotsman
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22 Mar 2017 18:31 - 22 Mar 2017 18:41 #229306 by Scotsman
Replied by Scotsman on topic Re: How effective are avalanche airbags?

An airbag deployment most likely saved the life of a skier in that tunnel creak avalanche.

i don't use one because of the added pack weight and a bad back.There's also the question of taking greater risks due to having one and perceived avalanche protection (see risk homostasis theory)

i am trying to get a local designer intertested in designing a light weight air tight pack that you would blow up, using lung power or light weight volume pump, before you descend.

the idea is to inflate the pack volume after you empty the pack of your descent kit.

An inflated pack may also help with tree well falls and object  hits, as well as avys.

I don't know if it would  have the volume of an airbag however.


Good you are innovating... and Im not putting your idea down but avy air bags do not work on the theory of flotation( a common and understandable mistake)... they work on the theory of substantially larger mass that causes bigger objects to rise to the top during the flow of the avalanche..not my opinion...science...google it. Your inflated pack would have to somehow increase the pack volume by a factor of at least 3 over a normal pack to be the equivalent of an air bag....something to think about.

www.snowbigdeal.com/avalanche-safety-gea...he-airbags-work.html

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  • Scotsman
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22 Mar 2017 18:36 - 22 Mar 2017 18:48 #229307 by Scotsman
Replied by Scotsman on topic Re: How effective are avalanche airbags?

Considering I do a lot of solo skiing and feel a need to start switching my skiing up by doing more off piste skiing, I figure my best option is to have an avalanche airbag. How effective are these devices? Could they also help protect the individual from a massive fall over rocks?  From this video, it looks like a worthy investment. I figure with no wife and or kids, I might as well start skiing as such!lol


They have proved to be effective in certain circumstances.
They are heavy and depending on the type you buy, can be a pain in the ass to travel with and get refills.
Not sure the electric versions are fully proven yet and Im waiting for the next cycle of electric ones before I update my current snowpulse bag.
I like that ones that offer head protection via the inflated bag which is why I bought the one I have.
I'm sure you can figure out the heuristic traps they can produce without being lectured to.

If you can afford it...why not?

Check Wildsnow for the definitive review.
www.wildsnow.com/5014/avalanche-airbag-backpack-overview/

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  • gravitymk
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22 Mar 2017 20:01 - 22 Mar 2017 20:07 #229308 by gravitymk
Replied by gravitymk on topic Re: How effective are avalanche airbags?

My comment about terrain selection stands.


Your propensity for the need to be "right' is in and of it's self a heuristic trap.
You don't know what you don't know.

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  • Scotsman
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22 Mar 2017 21:16 #229309 by Scotsman
Replied by Scotsman on topic Re: How effective are avalanche airbags?

My inflated ego would add another 15L. ;-) 

Don't be so modest.... Much more than that ;)
Im heading to Haines tomorrow to inflate my own ego and will be a heli- fan boy for a few days.
I'll let you know how the guides stack up compared to our beloved NCH guides.
Interestingly enough they provide you with a mandatory avy air bag pack and a mandatory harness.
Hope the weather cooperates.

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  • Chamois
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28 Mar 2017 11:31 #229366 by Chamois
Replied by Chamois on topic Re: How effective are avalanche airbags?
There was a good presentation on this subject a couple years ago at the NW Avy summit at UW - I've looked online for it but could not find it. One of the difficulties in trying to calculate a statistical advantage (or not) of using air bags is trying to find avy events where there were folks with and without airbags AND the individuals were subject to similar conditions.

If I remember the conclusion correctly it was that air bags did increase your chance of survival by less than 20% - so as usual it depends on how and where you ski.

There were some not very good examples - some skiers that did have bags, for various reasons, did not deploy them. And in two examples skiers undid the crotch strap as it was uncomfortable, got caught in an avy, and deployed their air bag. But they died because the bag pulled off their shoulders w/o the crotch strap. Jesus - if you are going to carry the dang thing use it as directed!

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  • Jonathan_S.
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06 Apr 2017 13:46 #229429 by Jonathan_S.
Replied by Jonathan_S. on topic Re: How effective are avalanche airbags?
If you want a somewhat more "breezy" presentation on the research, my presentation to a regional "SAW" is linked from the second paragraph here:
avycourse.blogspot.com/2010/04/additiona...ional-resources.html

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  • snojones
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10 Dec 2017 10:40 #230333 by snojones
Replied by snojones on topic Re: How effective are avalanche airbags?

An airbag deployment most likely saved the life of a skier in that tunnel creak avalanche.

i don't use one because of the added pack weight and a bad back.There's also the question of taking greater risks due to having one and perceived avalanche protection (see risk homostasis theory)

i am trying to get a local designer intertested in designing a light weight air tight pack that you would blow up, using lung power or light weight volume pump, before you descend.

the idea is to inflate the pack volume after you empty the pack of your descent kit.

An inflated pack may also help with tree well falls and object  hits, as well as avys.

I don't know if it would  have the volume of an airbag however.


I have also wanted an inflatable pack for another reason, backcountry skiing out of a wilderness camp. Once you remove all your camp gear from your pack, it becomes difficult to carry your skis on that pack. The loose skis end up banging my calves.

I have taken to packing a beach ball, which I stuff into the empty pack body, and then inflate to stiffen up the pack body. This really helps keep the skis from flopping around as I climb. Your inflatable pack could possibly do double duty in this regard.


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  • gravitymk
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11 Dec 2017 09:07 #230343 by gravitymk
Replied by gravitymk on topic Re: How effective are avalanche airbags?
An inflatable air mattress works well for this function and it's likely something that you would carry anyway. I have an older full length Therm-a-rest Ultralight that I have used for the purpose of providing enough volume in the pack to make a-frame ski carry manageable.

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11 Dec 2017 10:09 #230345 by Micah
Replied by Micah on topic Re: How effective are avalanche airbags?

An inflatable air mattress works well for this function and it's likely something that you would carry anyway. I have an older full length Therm-a-rest Ultralight that I have used for the purpose of providing enough volume in the pack to make a-frame ski carry manageable.


Thanks for the tip, that sounds like a good idea that I had not thought of!

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27 Feb 2018 09:45 #231236 by davidG
Replied by davidG on topic Re: How effective are avalanche airbags?

hey Scotsman did you ever ask those Alaskan guides if they report their near-miss accidents to their potential client base?
....


Whether we refer to such things as near misses or incidents, 'reporting' these things is good for the industry for more reasons than this immediate suggestion.. The more incidents with no consequence relative to those that do have consequence establishes a better picture of risk. As an example, in the hangliding community, the insurance market has a keen interest in understanding that ratio. What was perceived as a high risk endeavor, with commensurate insurance rates, has demonstrated with broader reporting of incidents with low or no consequence, that risk is lower than anticipated. Consequently, insurance rates have fallen.

It would be interesting to know in the heli-ski industry how this matter is perceived. I've enjoyed my few Heli-skis and have felt safely prepped and guided.

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  • snoqpass
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04 Mar 2018 13:32 #231289 by snoqpass
Replied by snoqpass on topic Re: How effective are avalanche airbags?
Posting bogus observations under the alias "Observations for Money" on NWAC is a douche move

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  • Charlie Hagedorn
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04 Mar 2018 16:04 #231292 by Charlie Hagedorn
Replied by Charlie Hagedorn on topic Re: How effective are avalanche airbags?

Posting bogus observations under the alias "Observations for Money" on NWAC is a douche move


I was glad to see that NWAC had taken it down by mid-day yesterday. I see now that there's a remaining one from 2/20.  Just sent an email to let them know.

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  • 0321Recon
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04 Mar 2018 19:58 #231295 by 0321Recon
Replied by 0321Recon on topic Re: How effective are avalanche airbags?

Considering I do a lot of solo skiing and feel a need to start switching my skiing up by doing more off piste skiing,�I figure my best option is to have an avalanche airbag. How effective are these devices?�Could they also help protect the individual from a massive fall over rocks?� From this video, it looks like a worthy investment. I figure with no wife and or kids, I might as well start skiing as such!lol


In addition to report linked by GravityMK, The WMS rates airbags as 1B, so besides not going, current evidence supports airbags at being at the top of preventing morbidity.

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  • Chris S
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05 Mar 2018 09:04 #231299 by Chris S
Replied by Chris S on topic Re: How effective are avalanche airbags?

Posting bogus observations under the alias "Observations for Money" on NWAC is a douche move


What am I missing? What does bogus observations have to do with this thread?

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  • Jim Oker
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06 Mar 2018 10:57 #231313 by Jim Oker
Replied by Jim Oker on topic Re: How effective are avalanche airbags?

What am I missing? What does bogus observations have to do with this thread?

It's a tangent to the tangent about "near miss reporting" by guide operations. *Someone* posted some bogus NWAC observation reports that were clearly taking aim at this same issue. Which some of us see as taking a dump out in the shared commons and unlikely to garner any added support on that issue.

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06 Mar 2018 13:53 #231314 by Jason4
Replied by Jason4 on topic Re: How effective are avalanche airbags?
From what I've read about the recent double fatality in the Teanaway area both of the riders that died had deployed their airbags. It will be interesting to see the full NWAC accident report.

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  • Jim Oker
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06 Mar 2018 14:01 #231315 by Jim Oker
Replied by Jim Oker on topic Re: How effective are avalanche airbags?
I saw one social media post where it was claimed that one of them was buried something like 14' deep =8-O

Sounded like one of the survivors had serious trauma and will be lucky to regain decent use of one leg.

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