So how would this IA work?

"Frederick Wilson" wrote in message
news:UUCTb.206128$I06.2286617@attbi_s01...
May be the wrong use. I have an instrument rating in helicopters and I
want
to get one for airplanes.

Typically the abbreviation "IA" in that context means "Instrument-Airplane".
Which, of course, you can't have for helicopters. You must have an
"Instrument-Rotorcraft" rating, which I suppose you could abbreviate as "IR"
if you like.

As far as what it would involve, just look at the regulations. They spell
out what's needed for the Instrument-Airplane rating. Some of the items you
will have already covered in your rotorcraft training and flying, while
others you will have not (since they will be specific to airplanes). You
need to do the stuff you haven't already done.

Pete