This is my first foray into this forum, but I bet someone here can help answer my question... but please go easy on me!
When Boeing's commercial division takes aircraft up for test flights, they file flight plans and those flights can be found on flightaware (e.g. the 787 test flight a couple of days ago was BOE1).
When Boeing's Integrated Defense Systems performs similar test flights, do they file flight plans? And, if so, what flight number range do they use?
Thanks for your help