The test flights are out of KBFI or KPAE. They either head out over the Pacific about 50 miles off the coast or else to an area just west of Moses Lake. They use the call sign Boeing 1, and on flightaware.com as BOE1.
Yes, you can see the history and the number of flights.
The aircraft I see on FR occasionally got from renton west to LaPush, then to Moses Lake..simple ferry flights to storage.
Strikes me as quite scary for Boeing shareholders that the Company is desperate enough to take an antagonistic line towards the lead regulator (rather than the collaborative approach previously presented).
Read up on the recent debacle with the 787 lightening protection...coming to a Senate hearing near you.