Please forgive this question, but do you actually have a partnership or multi-member LLC? I presume that you do but just want to make sure you are not a single-member LLC.
Also presuming that this enterprise is not your trade or business such that income would be subject to self-employment tax when passed through to the partners (members), then you would not have ordinary business income.
Your Section 179 expense would have to be entered in Forms Mode (Schedule K) since your scenario is a nonstandard scenario for the 1065 module of TurboTax Business.
The "A" is just a code that flows through to your K-1s (it is in the dropdown list under "Type"). It merely triggers the proper treatment when the partners (members) input the information from their K-1s on the personal income tax returns. If you still cannot locate that, post and let me know and I will try to include a screenshot.
