The "major portion" calculation is based on a checklist.
Checkmarks are put in each column, one column for the kit manufacturer,
one column for the builder. In some cases you'd have checkmarks in
both columns. You add up the checkmarks. If you have more checkmarks
in the builder column, you have a 51% approved kit. That may sound
like an oversimplification, but that's how it works.
Form 8000-38 is included at the end of the proposed FAA Order
8130-2.
There are 18 line items under "propulsion". They include
"fabricate engine", "install engine", "fabricate propeller", "install
propeller".
There another section titled "cockpit/interior". Some line
items include "fabricate instrument panel", "install instrument panel",
"fabricate electrical wiring controls/switches" and "install electrical
wiring controls/switches".
There aren't any sections for paint or interior.
My guess is Lancair ran the "checkmarks" at some point on the
ES, and other models and got the kits approved by the FAA. As we all
know, we can buy fastbuild firewalls, fastbuild engines, completed
panels, even electrical harnesses for some models. Those items are
listed in the checklist, so they DO affect the kit manufacturer vs.
builder percentage. Maybe Lancair had a few extra checkmarks in the
builder column when the calculation was done so they could provide
engines, firewalls and panels without losing the 51%.
After a kit is approved, any changes to the kit require a
reevaluation, running the checklist again. It's my understanding that
the ES Fast-Build kit is approved, but I can't help wondering if the
Millennium Super Fast-Build ES kit was reevaluated. After taking a
good look at the checklist, I'm not sure how we got more checkmarks in
the builder column to be honest with you.
Mike