If you consider FOIA then it could be, for example:
- of the logs of the measurements of the test flights flown on the 737 MAX prototypes with the new engines but without the MCAS, if the test flights are flown to establish the flight envelope, especially of the correlation to the pilot's input and the plane's response.
- of the calculations or of the physical models of the said response to the pilots input, on the plane without the MCAS. Such parameters and models are indeed used e.g. in the flight simulators.
- Note that even if there were planed deliveries of hundreds of billions (!) worth of 737 MAX planes, up to recently only four (!) flight simulators for 737 MAX were delivered. I don't know if it's possible to even fly them without assuming MCAS "always working perfectly."
I'm not directly in that field to be able to give you a "local" jargon though. My view is a result of just reading those newspaper articles which provided enough engineering details (and a few forums) and I do remember seeing some complex enough related graphs for which I''m sure they couldn't be invented by a journalist, but surely not a "definitive plainly obvious proof". But there is indeed a lot still kept hidden from the public, and I'm sure there are more technical details that are significantly worse than we are ready to imagine.
- of the logs of the measurements of the test flights flown on the 737 MAX prototypes with the new engines but without the MCAS, if the test flights are flown to establish the flight envelope, especially of the correlation to the pilot's input and the plane's response.
- of the calculations or of the physical models of the said response to the pilots input, on the plane without the MCAS. Such parameters and models are indeed used e.g. in the flight simulators.
- Note that even if there were planed deliveries of hundreds of billions (!) worth of 737 MAX planes, up to recently only four (!) flight simulators for 737 MAX were delivered. I don't know if it's possible to even fly them without assuming MCAS "always working perfectly."
I'm not directly in that field to be able to give you a "local" jargon though. My view is a result of just reading those newspaper articles which provided enough engineering details (and a few forums) and I do remember seeing some complex enough related graphs for which I''m sure they couldn't be invented by a journalist, but surely not a "definitive plainly obvious proof". But there is indeed a lot still kept hidden from the public, and I'm sure there are more technical details that are significantly worse than we are ready to imagine.