• Mark created a new forum post in ATA 22 Auto-Pilot
    Weird one. MCDP test 66 (sensor position) showed the Left A/P Rudder Servo at 20+ degrees with hydro on. Hydro off..... it fell back to 0.

    Swapped left and center FCC's. Normal left, normal right??? Swapped back, messed up again.
      
      
     
      
      
    Shot the servo coils..... 140'ish for left. 130's for center. (The circled "A" on the print represents 26VAC sensor excitation).
      
      
     
      
      
    Replaced FCC..... All good!!
     
      
     
      

     
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