Date: Fri, 5 Oct 2001 22:54:56 -0400
From: James Frantz <LFrantz@compuserve.com>
Subject: Lancair Spins
Sender: James Frantz <LFrantz@compuserve.com>
To: "INTERNET:lancair.list@olsusa.com" <lancair.list@olsusa.com>
Message-ID: <200110052255_MC3-E259-3A47@compuserve.com>
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>>
>>yes I know, it is not rated for this manuver, but has anybody
intentionaly
>or Inadvertently done a spin in the IV P,
>if so, can you share the experiance<

This is a fair question and requires some discussion. There are many
articles in the Lancair Network News Archives regarding spins for both the
IV and 320.  In all cases, the altitude loss was excessive and the
experience not one that the pilots wanted to repeat.  None of the Lancair
family of aircraft have been spin tested!   As the former editor of the
LNN, I had three conversations with Lancair pilots who inadvertently got
into spins. All felt  they were lucky to still be with us. We have lost
forever quite a few Lancair pilots who for one reason or an other spun
their aircraft into the ground. 


If you don't stall you can't spin!!!  Perhaps you can start to understand
why a stall warner is so important.  The ultimate stall warner is the AOA
with verbal warnings.  

For you folks installing the very capable Sierra Flight Systems, the pitch
limit indicator (PLI)  is not a stall warner nor was it intended to be! 

Additionally the PLI does not have an aural indication.  Aural indications
of an impending stall is a must. There is quite a lot of misunderstanding
about the PLI among the Lancair group and the perception that it will act
as a stall warner or AOA is mostly false. 

When I tested my Lancair 360, I did the stall series at forward CGs and
light GWs and worked the CG back in increments increasing GW along the way.
 As a result of these stall tests, I moved the Lancair recommended aft CG
limit one inch forward and installed the prototype to the  AOA Pro II with
aural stall and gear  warnings. To Lancair's credit the Legacy comes with
the AOA wing parts pre-installed.

The Lancair Archives is available on a CD from Marv and is very easy to
use.  Do a search for "spins" using the Windows "Start", "Find files and
folders" and all the LNN issues with spin information will be listed.   

Leave spins to the test pilot with a drag chute, a way to exit, no
exclusion hull insurance, and a desire to build a second aircraft.  And
enjoy the performance of our fine machines. 

Jim Frantz
LFrantz@compuserve.com
(952) 474-4154   


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Please send your photos and drawings to marvkaye@olsusa.com.
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