Service difficulty report · Switch · Boeing 737924ER

Difficulty date
December 8, 2017
Submitted
December 9, 2017
Operation
Air carrier
Aircraft
N75429
Make and model
Boeing 737924ER
Aircraft serial
30130
Aircraft time
30,494 hours, 10,354 cycles
Part
Switch
Part number
251A44304
Part serial
1424
Condition
Faulty
Location
Stab Trim
Stage of operation
AP
How discovered
O
Nature of condition
F, J
Precautionary procedure
O

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

What was found

ELEC STAB TRIM FAIL ALONG WITH SPEED TRIM FAA AND STAB OUT OF TRIM DISCOVERED AT APPROX. EMERGENCY DECLARED. PERFORMED DFCS BITE REF 22-11-00, FLIGHT FAULT FOR M01201 F/O''S STAB TRIM CONTROL COLUMN MODULE. PERFORMED LIB 32, TEST PASSED. SUSPECT INTERMITTEN FAILURE IN SWITCHING MODULE, NEEDS FURTHER T/S. R/R COLUMN CUTOUT SWITCH M1201 REF AMM 27-41-51-400-801 ALL TEST PASSED NO CURRENT FAULTS.