YAK 50 seizes engine and lands in grass field, UK, 05/2010.

[SkyvanDelta]

Did he hit something just prior to landing which damaged the plane or was the plane damaged by landing on the soft grass? The action begins at the 6 minute mark.

http://www.liveleak.com/view?i=552_1...9&c=1#comments

[supercub]

Re: YAK 50 seizes engine and lands in grass field, UK, 05/2010.

It said the engine had seized and the prop was windmilling.........how can that be on a piston engine........unless the cranshaft broke......or is there some kind of gear box or something on this engine?

[race9]

Re: YAK 50 seizes engine and lands in grass field video, UK, 05/2010.

Did he hit something just prior to landing which damaged the plane or was the plane damaged by landing on the soft grass? The action begins at the 6 minute mark.

http://www.liveleak.com/view?i=552_1...9&c=1#comments

It looks and sounds like he clipped a stone wall right before landing.

[Chris_UK]

Re: YAK 50 seizes engine and lands in grass field, UK, 05/2010.

The accident report is below:

http://www.aaib.gov.uk/publications/bulletins/august_2010/yak_50__g_yakk.cfm

Seems he pulled up over the dry stone wall during the force landing and stalled wheels up into the field on the other side (much better than hitting it full on).

[Matt58]

Re: YAK 50 seizes engine and lands in grass field, UK, 05/2010.

I'm guessing that something had to of broke for the prop to windmill like that; if the engine seized, that thing would not have moved. It stated somewhere in the video that he was losing oil pressure, maybe in the prop governer? I'm guessing here, so go easy on me.

[scottysv]

Re: YAK 50 seizes engine and lands in grass field, UK, 05/2010.

WHAT EVER HAPPENED TO THE ENGINE, HE DID A MAGNIFICANT JOB OF GETTING THE PLANE ON THE GROUND WITH A MINIMAL OF DAMAGE. I WOULD CALL HIM A GOOD PILOT And(lucky)....
Scottysv

[Chris_UK]

Re: YAK 50 seizes engine and lands in grass field, UK, 05/2010.

As I understand it the prop will windmill in the Yak50/52, thankfully my experience of flying the 52 has always been when the engine is working.
The loss of oil pressure was due to oil pressure adjustment valve coming out of the engine scavange pump

[SkyvanDelta]

Re: YAK 50 seizes engine and lands in grass field, UK, 05/2010.

Would the pilot have intentionally had the gear up or down in a field landing like this?