L-1011 Flight Controls: Speed Brakes - Flaps Up (27-37)

A rear view of the airplane shows spoilers L&R1 and L&R2 & 3 in their travel limited position with the corresponding Surface Position Indicator (SPI) indices. The inside right travel for number 2 & 3 spoilers is 30º while spoilers 4, 5 and 6 are up the full 60º speed brake travel. Also, number 1 spoilers L & R have no indication of the 20º up on the instrument in the image.

The B & D labeled indications on the SPI represent hydraulic systems powering the limiter actuators.