Today's Message Index:
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1. 07:12 AM - Re: 601 XL manual online? (Peter Chapman)
2. 07:34 AM - Re: 601 XL manual online? (Jay Maynard)
3. 04:54 PM - Re: 601 XL manual online? (johndread@aol.com)
4. 09:49 PM - Re: 601 XL manual online? (Joe)
Message 1
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| Subject: | Re: 601 XL manual online? |
At 01:05 25-02-10, I wrote:
>Is there a 601 XL manual online anywhere?
>
>I'm curious whether the Maximum Zero Fuel Weight is listed in it.
On re-reading the FAA report, I think my second question has been
answered. It suggests no MZFW was listed.
It's pretty sloppy engineering to calculate wing strength based on a
MZFW using zero fuel and then not tell customers about it.
In other words, the calculations for full load (1320 lbs) assumed
that the wing tanks were full, providing a reduction in wing bending
moment and easing the structural requirements. The plane wasn't
designed for loading up heavily and then putting in only quarter
tanks to avoid going over gross.
A MZFW using zero fuel, as the company did, suggests that the 601 XL
(pre-modification) should not have been loaded beyond 1176 lbs,
excluding fuel. ( 1320 - (24 US gal * 6 lbs/gal) = 1176 )
In some areas the FAA was a little tough on Zenith, saying things
that may well apply to a bunch of other manufacturers too, but Zenith
was the one in their sights. Still, other criticisms are pretty valid.
Peter Chapman
Toronto, ON
Message 2
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| Subject: | Re: 601 XL manual online? |
On Thu, Feb 25, 2010 at 10:11:33AM -0500, Peter Chapman wrote:
> On re-reading the FAA report, I think my second question has been answered.
> It suggests no MZFW was listed.
This is correct. The AMD POH lists no MZFW. I'm not sure what I think about
that, but it appears that the actual MZFW should be 1250 pounds, and that's
not that restrictive: it suggests a minimum fuel load of just under 12
gallons at max gross, and that's getting to be pretty marginal anyway.
--
Jay Maynard, K5ZC, PP-ASEL, CFI-SP http://www.conmicro.com
http://jmaynard.livejournal.com http://www.tronguy.net
Fairmont, MN (KFRM) (Yes, that's me!)
AMD Zodiac CH601XLi N55ZC http://www.tronguy.net/N55ZC.shtml
Message 3
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| Subject: | Re: 601 XL manual online? |
What FAA report?
-----Original Message-----
From: Jay Maynard <jmaynard@conmicro.com>
Sent: Thu, Feb 25, 2010 8:34 am
Subject: Re: Zenith601-List: 601 XL manual online?
On Thu, Feb 25, 2010 at 10:11:33AM -0500, Peter Chapman wrote:
> On re-reading the FAA report, I think my second question has been answer
ed.
> It suggests no MZFW was listed.
This is correct. The AMD POH lists no MZFW. I'm not sure what I think abou
t
that, but it appears that the actual MZFW should be 1250 pounds, and that'
s
not that restrictive: it suggests a minimum fuel load of just under 12
gallons at max gross, and that's getting to be pretty marginal anyway.
--
Jay Maynard, K5ZC, PP-ASEL, CFI-SP http://www.conmicro.com
http://jmaynard.livejournal.com http://www.tronguy.net
Fairmont, MN (KFRM) (Yes, that's me!)
AMD Zodiac CH601XLi N55ZC http://www.tronguy.net/N55ZC.shtml
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Message 4
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| Subject: | Re: 601 XL manual online? |
http://www.eaa.org/news/2010/2010-02-22_zodiac.asp
EAA News - FAA*s Zodiac Aircraft Report Sets Future Direction
February 22, 2010 -- Several factors, including a wing structure that does
not meet ASTM standards for light-sport aircraft, are indicated as causes
for Zodiac CH601XL and CH650 aircraft in-flight accidents, according to a
comprehensive Federal Aviation Administration report released today.
http://www.eaa.org/news/2010/Zodiac_Review_%20Report.pdf
http://www.eaa.org/news/2010/ZodiacReportAppendix.pdf
Joe E @ BFI
N633Z, 616 hours
CH601XL AOG
On Thu, 25 Feb 2010, johndread@aol.com wrote:
> What FAA report?
> -----Original Message-----
> From: Jay Maynard <jmaynard@conmicro.com>
> To: zenith601-list@matronics.com
> Sent: Thu, Feb 25, 2010 8:34 am
> Subject: Re: Zenith601-List: 601 XL manual online?
> On Thu, Feb 25, 2010 at 10:11:33AM -0500, Peter Chapman wrote:
>> On re-reading the FAA report, I think my second question has been answered.
>> It suggests no MZFW was listed.
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