From: "John Wright, D.O." <jwrightdo@worldnet.att.net>
To: "LML" <lancair.list@olsusa.com>
Subject: Can we believe our CO detectors?
Date: Sun, 22 Apr 2001 19:18:32 -0600
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Friday night I was flying my iv-p pressurized from Colorado to El Paso at
16,500 at night when my
CO Guardian CO detector started beeping and displaying a "1". As I continued
on it began to register a 2 and then a 3 and finally a 4 (on a scale of 9).
I descended to 12,500 and depressurized with no success in influencing the
readings. I even turned my heater on to see if that would inflence the
readings. I deflated the door seal and still no success in improving the
readings until after landing I popped the door open while taxiing and saw
the readings drop down to 1 but no lower.  The next morning on departure
immediately after start up it registered 9 which raised my suspicions. It
registered 9 all the way home.  On landing I removed the unit and placed it
in my car on the way home and it continued to register 9 all the way home.

The only reason I share this is that something else to think about in the
decision making process is a spurious reading.

PS  Incidentally, on the night landing in El Paso I was instructed to follow
an MD-80 to 22.  After the MD 80 landed he informed tower that he had just
run over a "small" rabbit on his roll out.  Tower offered me 26L which I
readily accepted recalling others who have broken their nose strut pin from
hitting even small bumps on the runway.

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