I'm writing software to integrate a weight and balance chart into my website. Most of the Type Certificate Data Sheets TCDS I've read follow the form:
x to y at z lbs. or less
a to b at c lbs.
Straight line variation between points given.
I want to make sure that I test this against more complex scenarios. Are there general aviation aircraft that have more than 2 "ranges" or are otherwise exceptional that would make for good test cases? I am only concerned with GA aircraft at this time.