Forced landing in a snow covered field

Off Field Landing of the Week
gmarshall
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Forced landing in a snow covered field

Postby gmarshall » Wed Jul 10, 2013 12:55 am

https://www.youtube.com/watch?v=JDQVN_G1bM4

Cessna 175B
So apparently carb ice, the pilot elected to put it down in a field as the local roads all seemed to be near powerlines. After touchdown, the aircraft overturned, but all 4 passengers and the pilot (including a 7 month old sitting in a lap!) were ok.

Though in the video the prop is turning, it's apparently just windmilling at that point as the engine failed to restart.

http://www.kathrynsreport.com/2013/02/c ... phone.html

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champguy
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Re: Forced landing in a snow covered field

Postby champguy » Wed Jul 10, 2013 8:03 pm

So why did the engine stop producing power? Carb ice in cold Utah air? Really?
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gmarshall
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Re: Forced landing in a snow covered field

Postby gmarshall » Wed Jul 10, 2013 10:29 pm

champguy wrote:So why did the engine stop producing power? Carb ice in cold Utah air? Really?


From the report:

" According to the Federal Aviation Administration Special Airworthiness Information Bulletin, entitled Carburetor Icing Prevention, the temperature and dew point were conducive to the formation of icing at glide and cruise power."


So obviously failure to regularly apply carb heat leaves the ball in the pilot's court, but as you expressed, not everyone worries about carb ice when it's below freezing.

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champguy
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Re: Forced landing in a snow covered field

Postby champguy » Thu Jul 11, 2013 11:26 am

Carb heat on descent yes, but on climbout?
I've had a few cases of carb ice, I presume, on climbout in warm weather when the plane had been tied out and gotten rained on overnight. Once in particular after a very aggressive run up because I was concerned.
I still just never expect a problem with ice on climbout and the throttle wide open.
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