"Dane Spearing" wrote in message
...

You are correct...there is no "regulation" (i.e. - rule in the FARs) that
state you can not use a hand-held GPS for IFR navigation.

Correct...as the SOLE REFERENCE.

However, the
non-regulatory AIM makes it very clear. As I mentioned in a previous
post,
there's also nothing in the FARs about requiring you to read back a hold
short instruction....just the AIM.

TSO 129 requirement for IFR instruments?

Even seven years old, this article is relevant:
http://www.avweb.com/news/columns/182076-1.html
November 29, 1998

Pelican's Perch #11:
Using a Handheld GPS — IFR!

/--

Never one to let a good idea, or safer method of flying, wither away for
lack of action or misunderstanding, AVweb's John Deakin takes on the subject
of flying IFR with your GPS handheld. "Not legal," you say? "Not so," says
John. Flying IFR with your handheld GPS is not only legal, it's a godsend he
says, and explains just how to get the most out of that handful of
navigation wizardry.

/--