not sure about the date but on this picture taken during a different flight at FL 270 shows the tail number.
To: lml@lancaironline.net
Date: Sat, 16 Nov 2013 18:27:54 -0500
From: vtailjeff@aol.com
Subject: [LML] Re: Evo in the middle of jet stream
What is the tail number and date of this photo?
If you compare the two screen shots the IVPT looks nearly 100 KTAS faster than the Evolution at FL 280.
Maurits
<Lancair IVPT performance.jpg>