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Subject: Re: Figuring out the pressurization system IV-P
From: Dico Reijers <dico@internetworks.ca>
X-Original-To: brent@regandesigns.com, lml <lml@lancaironline.net>
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Hi Brent,

Thanks for your reply on the IV-P pressurization.  I found it quite helpful
and informative as I figure out the pressurization system.

From my limited testing so far (flying at 10-12k), I've noticed that the
pressurization isn't linear.  At 10k my cabin altitude (according to the
indicator) is 5k and the PSI is perhaps 2 or 2.5 differential...  since the
POH suggests a 8000' cabin at FL220... I am surprised that I can climb an
additional 12k and have the cabin altitude only rise an additional 3k.  I
was flying at 31" / 2500.

How do you check for leaks on the ground?

thanks,

Dico

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Hi Brent,<br><br>Thanks for your reply on the IV-P pressurization.=A0 I fou=
nd it quite helpful and informative as I figure out the pressurization syst=
em.=A0 <br><br>From my limited testing so far (flying at 10-12k), I&#39;ve =
noticed that the pressurization isn&#39;t linear.=A0 At 10k my cabin altitu=
de (according to the indicator) is 5k and the PSI is perhaps 2 or 2.5 diffe=
rential...=A0 since the POH suggests a 8000&#39; cabin at FL220... I am sur=
prised that I can climb an additional 12k and have the cabin altitude only =
rise an additional 3k.=A0 I was flying at 31&quot; / 2500.<br>
<br>How do you check for leaks on the ground?<br><br>thanks,<br><br>Dico<br=
 clear=3D"all"><br><br>

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