QAVION,
The B767-300 Aileron lockout is operated by an electrical actuator that aligns the the pivot points of the aileron quadrant input and output cranks. Thus, when locked out, rotation of the input crank produces no output crank movement. The left and right electric actuators are driven by two Stabiliser Trim/Aileron Lockout Modules (SAM) with one operating both ailerons and the other in standby. A logic cross-feed provides automatic selection of the controlling SAM (usually the Left.) Each SAM is fed with CAS data from its on-side Digital Air Data Computer via ARINC429 data bus. The controlling SAM generates discrete lock commands to both outboard aileron lockout electrical actuators and monitors actuator position for fault annunciation and control switching decisions.
The lockout is done to a speed schedule as follows:
1. Vc > 275 Kts CAS
2. Mach No. in the range 0.5M to 0.58M AND Vc equal to or greater than 235 Kts CAS
OR
3. MachNo. equal to or greater than 0.58M
The schedule contains a threshold hysteresis band of 0.2M/6 Kts CAS Vc to provide for recomputation lag time. Actuator Lock/Unlock time is 15 seconds.
The Flaps are not involved in any way whatsoever.
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Through difficulties to the cinema