Service difficulty report · Limit Switch · Boeing 74747UF

Difficulty date
February 7, 2017
Submitted
February 8, 2017
Operation
Air carrier
Aircraft
N412MC
Make and model
Boeing 74747UF
Aircraft serial
30559
Aircraft time
69,575 hours, 10,999 cycles
Part
Limit Switch
Condition
Out Of Adjust
Location
Stab Trim
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

FUNCTIONAL FAIL OF THE STABILIZER TRIM CONTROL COLUMN CUTOUT SWITCHES AND CIRCUIT. PERFORM WIRING CONTINUITY CHECK FORM SRM TO STAB TRIM CONTROL MODULE RESULT WAS SATISFACTORY IAW WDM 27-41-11 AND 27-41-24 REV 41. PERFORMED STABILIZER TRIM ELEVATOR CONTROL ACTUATED LIMIT SWITCH ADJUSTMENT IAW AMM 27-41-07-835-001 REV 88 STEP A TO E. PERFORM OPERATIONAL TEST, RESULT WAS NORMAL IAW AMM 27-41-07-835-001 REV 88 STEP E(4).

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