Service difficulty report · Button · Urocop EC135P2

Difficulty date
September 4, 2022
Submitted
September 6, 2023
Operation
Air carrier
Aircraft
N139TJ
Make and model
Urocop EC135P2
Aircraft serial
0322
Aircraft time
8,212 hours, 43,034 cycles
Part
Button
Part number
83453001
Condition
Inoperative
Location
Cyclic Control
Component
Cyclic Stick · Airbus
Component part number
L671M1003101
Stage of operation
AP
How discovered
O
Nature of condition
F
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

ON FINAL TO KLOM FOR FUEL, EXPERIENCED SUDDEN AND CONSISTENT UN COMMANDED MOVEMENT OF THE CYCLIC IN MULTIPLE AXES, WITH & WITHOUT THE AFCS ENGAGED, AND WITH AND WITHOUT THE FORCE TRIM BUTTON BEING DEPRESSED. ADDITIONALLY, FELT AS IF FORCE TRIM WAS ACTUATING DESPITE THE CYCLIC BUTTON BEING DEPRESSED. NO CAUTION OR WARNING LIGHTS ILLUMINATED EXCEPT THOSE EXPECTED WHEN THE AFCS WAS "PICKLED" FROM THE CYCLIC TO SEE IF IT WAS THE CAUSE OF THE MOVEMENTS. WHILE FORCEFUL, MOVEMENTS WERE NOT STRONG ENOUGH TO PREVENT A SAFE LANDING. MIS WAS SUBMITTED ON 09/05/2023, BUT UPON FURTHER DISCUSSION WITH RAD AND RAM, THIS SDR IS ALSO BEING SUBMITTED.

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