|Flight test instrumentation:
A large orange box with flight instrumentation will fly in the F-22's right hand main weapons bay. The box, called the instrumentation data acquisition package, acquires data from more than thirty remote units scattered around the airplane. The box contains a high-speed data recorder that retains all the flight data. It also encrypts and transmits selected parameters back to the mission control station on the ground via two antennas on the aircraft. The instrumentation box stays with the airplane for its entire flight test life.
http://www.globalsecurity.org/military/ ... estfly.htm