- Thrust rating required extremely heavy-duty structure
- Tight conformance to applicable regulations
This full-power run-up JBD is primarily used by GE for their B747 flying test beds based in Victorville, California. Since being installed, the flying test beds have carried a number of test engines including the GEnx, GP7200, LEAP, Passport, and GE9X. This JBD has also served as a unique backdrop for Southwest Airlines advertising campaigns.