E-flite Cap 232 BP ARF - Manual (Page 21)

 6. Hinging the rudder follows the same procedure
as the elevators, except you don’t have to worry
about the elevator joiner. Use three CA hinges
when attaching the rudder to the fin/fuselage.
  7. The last step is to hinge the ailerons to the
wing. Each aileron uses four hinges to attach
it to the wing.
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