Sonex N91922 NTSB factual report

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Sonex N91922 NTSB factual report

Postby WaiexN143NM » Sun Feb 12, 2017 10:19 pm

Hi all ,
Reading avbl for this crash out of Big Bear CA. In 2014. Www.kathrynsreport.com. Feb 12 2017.
RIP Mr. Lutton.

WaiexN143NM
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Re: Sonex N91922 NTSB factual report

Postby OneTallShort » Mon Feb 13, 2017 12:21 am

Here's the direct link to the report:
http://www.kathrynsreport.com/2017/02/s ... urred.html
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Re: Sonex N91922 NTSB factual report

Postby OneTallShort » Mon Feb 13, 2017 3:52 am

In looking through the data on this accident, it appears that the factual report has an error.

According to the engine logbook, the engine was a Volkswagon 2180 Aerovee, serial number
270, rated at 80 horsepower. The last maintenance recorded was an oil change on October 18,
2014, at a total time of 11.2 hours.


In looking at the engine logbook, I don't ever see an engine change, and the total time at the last oil change record was 111.2 hours.

One other little curiosity I noted was that according to the Airframe Log it appears that the plane left phase 1 testing after 5.5 hours. That doesn't quite seem right.

https://dms.ntsb.gov/pubdms/search/docu ... mkey=90275

Short summary: New owner on ferry flight home from CA to OH, flew out of an 8K plus DA strip after taking on fuel. Aborted first takeoff. #3 cylinder head found likely fouled. No fairings or wheel pants on a tri-gear didn't help. Couldn't maintain positive rate of climb (maybe overheating/ warning lights going off), stalled/spun it into a dried lake bed.

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Re: Sonex N91922 NTSB factual report

Postby MichaelFarley56 » Mon Feb 13, 2017 3:29 pm

Gregg,

While I wish I knew what happened to Clare (he was a friend), I do remember that this particular Sonex was one of the few certified as E-LSA, hence the 5 hour Phase 1 as opposed to the normal 40 hour Phase 1 for an E-AB example.

Just an FYI...
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Re: Sonex N91922 NTSB factual report

Postby OneTallShort » Mon Feb 13, 2017 9:50 pm

Mike,

Sorry for the loss of a friend and fellow Ohioan. Kinda hits closer to home too. I was wondering if an E-LSA registration wasn't the cause/ solution to the short test period, but I couldn't find anything in the paperwork to confirm it...but that makes some sense.

Gregg Short
Burbank, OH
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Re: Sonex N91922 NTSB factual report

Postby fastj22 » Tue Feb 14, 2017 10:05 am

This is looking like a typical high DA accident. At KFLY we seem to have a lot of them, usually from transients who refuel while doing a cross country. They are near gross, take on full fuel and have trouble getting out of ground effect and don't recognize the dramatic performance decrease in time. An 80HP Sonex running too rich would be a real challenge.

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