So, some of you know that I created a nice excel template to be used to do
the W&B for a Legacy.  A question has come up that I can't answer from the
information in the POH.

Is has to do with the "reference - starting point".  

Which way did you do your W&B and which way is the *correct* way.

a) Did you use the Firewall Joggle and the 64.625" ARM as the reference
point, taking all your other measurements from that and then doing the
adding and subtracting to get the actual ARM?

b) Did you use the tip of the spinner as FS 0" and measure everything from
that point?

The manual suggests that you start with the 64.625 as the reference number
and I suspect that is the correct way as that would be a closer reference to
the actual MAC, than the tip of the spinner which can vary quite a bit.
Take for example the MT prop/spinner it's a considerable different length
than the Hartzell.

So, which way is the correct way, and which did you use?

Lastly, when doing the baggage area ARM, did you use the published 141" or
did you actually measure when the ARM is for the center of the baggage area?
Or did you just back calculate it?

Thanks in advance, I'd like to include a note in my spreadsheet and I'd like
this reference for my own W&B

Alan Adamson
Atlanta, GA
Legacy FG - IO550 in carbon