On 11 Feb 2005 13:41:05 -0500, (Roy Smith) wrote:

How much integrity does an ADF have? I'll take an non-RAIM-ified
purple line over "it's still beeping" any day.

Especially after you've flown a few NDB approaches and look down and
see the transmitter coming up below your right wing and see the needle
pointing left of the nose.