Trim-Servo Controller

N9103D is equipped with a two-axis Safety-Trim electronic servo speed-control system. The system replaced the original speed controller and relay module, resolving problems with intermittent operation. This installation provides reliable automatic high and low speed trim actuation. See Owner’s Manual for details.

Benefits

  • Electronic-servo controller with speed control run-away protection
  • Time-limited operation prevents trim servo run-away conditions
  • Servo travel limited to 3 seconds per trim switch actuation
  • Reverse-function switch allows pilot to recover from a stuck or failed trim switch
  • Eliminated earlier relay decks and speed controller
  • Simplified wiring, with no extra parts needed for pilot and co-pilot trim switches
  • Designed for N9103D’s installed Ray Allen electric elevator and aileron trim servos
  • Short circuit proof, reverse polarity protected
  • 2-axis model provides automatic high and low speed elevator and aileron trim actuation 



Safety-Trim switch




Safety-Trim wire harness and servo speed controller





Safety-Trim servo controller is installed under pilot-side seat pan.




Safety-Trim schematic




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