Syd, How are trim tabs illegal. The rule of thumb is as good as, or better. The point I was making is, because the book said xxxxxxx . It is not carved in stone. Each person has a better mouse trap. I have also seen tab as big as a child hand. And I would guess that that a/c has a real problem. Problem that would mean real work to remedy. But Illegal is a strong word. Go to Ercoupe fly in Look at ID plates Split elevator with C Data plates. Do a weight an Balance on Ercoupe departing to go back home. Two grown men Cameras, baggage, IFR and full tanks. That deadly Not the trim tabs. Warren H. Been there done that.
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