Center of Gravity

CG on a real airplane is easy to figure out with a weight and balance calculation.
Does anyone has a magic formula, chart, software to figure out the percentage to input in the FMS for a specific flight model.
In other words where and which are the data to put together?

If I'm not mistaken, the plane itself tells you if you are out of w/b from various sensors built into the landing gear. It should pop up on the EICAS display while you are at idle at the gate.

Ever get on a plane with just a few people and the attendant asks someone to move to a rear seat for w/b reasons?

I have no idea if PM built this in or not.

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Originally Posted by Jackpilot

CG on a real airplane is easy to figure out with a weight and balance calculation.
Does anyone has a magic formula, chart, software to figure out the percentage to input in the FMS for a specific flight model.
In other words where and which are the data to put together?

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I'm not sure where else you would find a percentage of MAC other than the POH tables. I don't know of the formula either. I had aerodynamics in college, but that was too many years ago.