On Mon, 13 Sep 2004 18:35:47 +0200, Stefan
wrote in ::

As a glider pilot, I've never understood this hold-the-altitude-itis of
my motorised brethren.

The desire of pilots of motorized aircraft to hold an altitude is a
result of FAR § 91.159 VFR cruising altitude or flight level.

http://ecfr.gpoaccess.gov/cgi/t/text...2.5.33&idno=14