After reading the article I retrieved my copy of the L23 flight manual. Where does it say you can't fly it higher than 12,805 feet? There are VNE reductions calculated up to 35,000, but nowhere in it can I find a service ceiling limitation as the plaintiff seems to suggest there are.

Did I miss something?

Note:I am aware of the differences between flight test for certification and the extrapolation used to prepare the manual.


https://trib.com/news/state-and-regi...249be5d1c.html