Service difficulty report · Trim System · Cessna 680A

Difficulty date
December 3, 2020
Submitted
December 11, 2020
Operation
Air carrier
Aircraft
N630QS
Make and model
Cessna 680A
Aircraft serial
680A0179
Aircraft time
1,713 hours, 1,149 cycles
Part
Trim System
Condition
Out Of Rig
Location
Horizontal Stab
Stage of operation
CL
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

EXCESSIVE BACK PRESSURE NEEDED FOR ROTATION. THE HORIZONTAL STAB INDICATIONS SEEMS TO NOT MATCH COCKPIT INDICATIONS. ALL OTHER FLIGHT CONDITIONS ARE NORMAL AND FREE OF MOVEMENT. NORMAL TAKE OFF POSITION CALCULATED AND EXCESSIVE FORCE NEEDED FOR ROTATION. VERIFIED THAT HORIZ STAB IS OVER SHOOTING ND (LEADING EDGE UP) AND UNDERSHOOTING NU (LEADING EDGE DOWN). CONTACTED TEAM LATITUDE AND VERIFIED THAT THE HORIZ STAB ACTUATOR REQUIRES A COMPLETE RIG CHECK/RE-RIG. GAINED ACCESS TO STAB CONTROL ACTUATOR. PERFORMED AND COMPLIED WITH FULL SYSTEM PITCH TRIM RIGGING, IAW 680 A MM 27-40-05. PERFORMED AND COMPLIED WITH STAB TRIM POINTER RIGGING, IAW 680A MM 27-40-00. CLOSED ACCESS AND PERFORMED TRAVEL CHECKS ADJUSTMENT TESTS. ALL CHECKED SATISFACTORILY, IAW 680A MM 27-40-05.

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