FLIGHT CONTROL SYSTEM MAINTENANCE OPERATIONAL CHECK (cont)
Maintenance personnel must be warned verbally prior to moving the
collective or cyclic stick. Any control activated can result in sudden blade
movement that can sever or crush fingers or hands.
If controls bind, check problem prior to continuing procedure. Failure to
clear controls of binding may result in sheared pins in the control axis.
If TRIM circuit breaker (pilot center circuit breaker panel) (fig. 1146) does
not stay closed, go to paragraph 1116 if in FORCE TRIM ON,
paragraph 1117 if in FORCE TRIM OFF, or paragraph 1118 if in FORCE
1. Complete maintenance operational check as follows:
a. With collective friction off, move pilot
collective stick (fig. 1154) full up and down.
If collective stick does not move up and down
smoothly (excessive force required) or is binding,
visually check the collective stick guide for corrosion
or other substances which may inhibit stick
movement. If such substance is found, remove it and
repeat the collective stick movement check. If no such
substance is found, check collective adjustment (part
of pilot or CPG collective stick assembly installation in
If collective stick does not travel full up and down to
the respective stop, go to paragraph 1119.
b. With collective friction off, move pilot
collective stick to mid position. Apply
If collective stick does not remain in position, check
the collective friction adjustment.