Gig 601Xl Builder wrote:

When and why did the nomenclature on those get changed. I learned to fly
in the late 70's and flew during the early 80's a bunch then laid off
for quite a while and got my helo rating in the mid 90's.

I'll be honest it wasn't until I started building in 2002 that I
realized that everyone was calling them the new names and decided that I
would too.

I dunno. The x-thousand-hour old-timers around the FBO still refer to
it as the "DG" and I'm not going to pull an Anthony and correct them
every time they do. Nor am I going to discount their wisdom or flight
training.

In any case, the Airplane Flying Handbook glossary has no entry for
Directional Gyro, but under Heading Indicator it says "also called a
directional gyro."

For Attitude Indicator it says "An instrument which uses an artificial
horizon and a miniature airplane..." That makes more sense; the AH is
just a component of a bigger system, so it's kind of like hearing
end-users refer to their "CPU", which also started a few years ago.

-c
"His momma call him Cassius, I call him Cassius." -Eddie Murphy