SDR ASAA2017031420174

Service difficulty report · Warning System · Boeing 737890

Difficulty date: March 14, 2017
Submitted: March 16, 2017
Operation: Air carrier
Aircraft: N557AS
Make and model: Boeing 737890
Aircraft serial: 35176
Aircraft time: 41,149 hours, 12,110 cycles
System (JASC): 2741 · Stabilizer Position Indicating
Part: Warning System
Condition: False Activation
Location: Cockpit
Stage of operation: CL
How discovered: O
Nature of condition: N
Precautionary procedure: O

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

What was found

STAB OUT OF TRIM LIGHT ILLUMINATED DURING CLIMB. AUTO-PILOT TRIM NOT WORKING PROPERLY. MAIN ELECTRIC TRIM WORKS NORMALLY. GROUNDED - YES. PERFORMED GVI ON STABILIZER JACK SCREW, NO FOREIGN OBJECT FOUND. PERFORMED SPEED/STAB TRIM TEST GROUP 32 THREE TIMES, NO DEFECTS NOTED. PERFORMED LAND VERIFY TEST, REF AMM 22-11-00/201 GROUP 49, THREE TIMES, NO DEFECTS NOTED. AIRCRAFT REMAINS AUTOLAND/HGS QUALIFIED. STATUS SCREW REFLECTS SAME.