Block V B‑52 Crew Chief Practice Exam

Spoilers are gated by a differential mechanism that only allows them to move when the airbrake is commanded. When you deploy the airbrake, hydraulic pressure shifts the differential linkage, letting the spoiler panels rise to dump lift and add drag. This setup gives you predictable deceleration and descent control, and it can also provide differential spoiler action for roll if needed. When the airbrake isn’t in use, the mechanism keeps the spoilers stowed, preventing uncommanded lift loss.