----[Please read http://ercoupers.com/disclaimer.htm before following any
advice in this forum.]----
I would interpret it as indicated airspeed...whatever the airspeed indicator
reads, at any altitude.
Glen Davis CFII
Grumman Tiger N70GD
1946 Ercoupe N3103H
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----- Original Message -----
From: "Clem Boddiford" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, December 29, 2005 8:21 PM
Subject: [COUPERS-FLYIN] LSA/ISA
----[Please read http://ercoupers.com/disclaimer.htm before following any
advice in this forum.]----
ISA is the international standard that establishes lapse rates for
pressure, density and temperature up to the flight levels. For example
they set std. sea level pressure as assumed to be 29.92" HG.
As John V. points out 138 mph indicated at sea level is LSA compliant. 138
mph at 8000' is really 150mph on your GPS GS.
This is where I get puzzled. Does FAA mean, as long as you do not indicate
more than 138 mph at any altitude, you are OK? Or are they going to say,
you must adjust the 138 mph indicated at 8000', to equate it to std sea
level conditions, by increasing it by the ISA altitude lapse rate, which
will bring it up to 150 mph CAS at sea level, and that is not compliant.
Your thoughts are appreciated....John
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