Weather balloon project

[Steve]

Being suggested that this plane impact was a weather balloon project:

    https://www.youtube.com/watch?v=J84ywJ1advw

    Steve G8KHW


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[John Laidler]

Very plausible. The impact damage is about the right size but the altitude combined with the time it happened seems odd unless the balloon sprung a slow leak before burst.

John

M0WIV 

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[Nick McCloud]

At first glance, looks like the long version of the bird strike tests UK vs US:

 "DEFROST them first"

Would have to be a fairly substantial bit of something to do that sort of damage to a cockpit window.

I dunno, perhaps about 18 inches long protruding down from a plastic box suspended under a giant ball of tech filled polystyrene?

[Mark Jessop]

It's possibly one of the WindBorne Systems sondes. There was one in the right place that stopped reporting at about this time:

73

Mark VK5QI

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[Steve]

SOLVED then!

10953 (35935 ft) is the right height 

    23:06   GMT +10.30 is Marks local time 

    which would be 12:36 GMT - which would be 06:36 local in Utah

Same altitude, same time, same location. Gotta be it.

    Steve

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[Mika Köching]

Yes, and they even wrote an official statement: https://windbornesystems.com/blog/ua-1093

[Steve]

And Scott Manley is aware.

    Steve

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[Steve]

Cross posting for completeness 

    Steve G8KHW

-------- Forwarded Message --------

Subject:	Re: [GPSL] Weather balloon project
Resent-Date:	Mon, 20 Oct 2025 15:06:47 -0700
Resent-From:	n...@mwt.net
Date:	Mon, 20 Oct 2025 17:06:38 -0500
From:	Joe WB9SBD via groups.io <nss=mwt...@groups.io>
Reply-To:	GP...@groups.io
To:	GP...@groups.io

On 10/20/2025 4:50 PM, Steve G8KHW / AJ4XE wrote:

SOLVED

Looks like this one has been solved by the sondehub team (well done guys!) - it was almost certainly a commercial radiosonde - as a sonde stopped transmitting in the same location, same altitude and same time.

The sonde in question has been estimated to be about 1Kg at the time.  The NTSB has been informed.

    Steve

On 20/10/2025 21:29, ctlyster via groups.io wrote:

This was during the peak of the Orionid Meteor shower. It could have been a fragment of a larger meteor that broke apart and slowed velocity. I was monitoring the shower on my radio detection rig and it was a very active one this year.

73'S

Carl

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