The ANTISKID panel is located on the overhead panel of the Lockheed L-1011. A complete dual braking system is provided, including the single shuttle valve that ports either normal system B or alternate system C fluid to the break assemblies. A hydraulic fuse in both systems prevents complete fluid loss due to any leak in the break system. Anti-skid is energized with gear lever down and parking brake off. The anti-skid system can only be tested with the gear lever down and using normal system B. During a test, the return line shutoff valves are closed and the system maintains any existing brake pressure.
The components on the panel are as follows:
- ANTI-SKID LIGHTS (LEFT1/2 and RIGHT 3/4) ... all lights are illuminated during system test. Individual lights indicate system has operated to release brakes on a skidding locking wheel.
- NORMAL and ALTERNATE TEST SWITCHES ... with anti-skid switch IN, when pressed, illuminates all release lights to indicate respective anti-skid system is operative.
- ANTI-SKID SWITCH ... IN - ON is illuminated and anti-skid system operative with gear lever in down position. OFF is illuminated when parking brake is set and for other malfunctions. OUT - OFF is illuminated and there is no anti-skid protection available.
- No lights illuminated indicates gear
Panel Location
