B737-700/800/900 Flight Controls
Speed Brakes
The speed brakes consist of flight spoilers and ground
spoilers. Hydraulic system A powers all four ground
spoilers, two on the upper surface of each wing. The
SPEED BRAKE lever controls the spoilers. When the
SPEED BRAKE lever is actuated all the spoilers extend
when the airplane is on the ground and only the flight
spoilers extend when the airplane is in the air.
- Compression of any landing gear strut
enables the flight spoilers to deploy.
Compression of the right main landing gear
strut enables the ground spoilers to deploy.
Flight Controls SGR