Service difficulty report · Actuator · Cessna 750

Difficulty date
October 10, 2016
Submitted
October 14, 2016
Operation
Air carrier
Aircraft
N790XJ
Make and model
Cessna 750
Aircraft serial
7500070
Aircraft time
15,576 hours, 9,205 cycles
Part
Actuator
Part number
991455810
Part serial
112U
Condition
Failed
Location
Rt Elevator
Part time
1,455 hours, 706 cycles
Stage of operation
CL
How discovered
O
Nature of condition
F, J
Precautionary procedure
A

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

What was found

WHILE ON DEPARTURE FROM KLRD, FLIGHT CREW RECEIVED AN AMBER PITCH FEEL FAIL CAS MESSAGE, THE CHECK LIST WAS THEN ACCOMPLISHED WHICH STATES TO LAND AS SOON AS POSSIBLE. CREW ELECTED TO RETURN TO KLRD, DECLARED AN EMERGENCY AND LANDED WITHOUT INCIDENT. DURING TROUBLESHOOTING, MAINTENANCE FOUND A FAILED RT ELEVATOR LINEAR ACTUATOR P/N 9914558-10 S/N 112U AND A FAILED ELEVATOR PITCH NK122 MODULE P/N 6718476-7 S/N 0217. BOTH THE ACTUATOR AND PCB WERE REPLACED, ALONG WITH THE LT ELEVATOR LINEAR ACTUATOR, THIS WAS REPLACED OUT OF PRECAUTION. A SATISFACTORY PITCH FEEL SYSTEM FUNCTIONAL TEST WAS ACCOMPLISHED.

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