SDR ASAA2016060916996

Service difficulty report · Warning Message · Boeing 737990ER

Difficulty date: June 9, 2016
Submitted: June 13, 2016
Operation: Air carrier
Aircraft: N402AS
Make and model: Boeing 737990ER
Aircraft serial: 41189
Aircraft time: 14,192 hours, 4,608 cycles
System (JASC): 2210 · Autopilot System
Part: Warning Message
Condition: False Activation
Stage of operation: DE
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

SPEED TRIM MASTER CAUTION ILLUMINATED ON RECALL DURING DESCENT CHECK. ACFT GROUNDED. FFR, SPEED TRIM, SHOWS 1 RELEVANT FAULT, AUTO STABILIZER TRIM CUTOUT, MESSAGE 22-1182. DFCS BITE GROUP 32.00 SPEED/TRIM PASSES NORMALLY. ETOPS GROUND VERIFICATION SUCCESSFUL IAW FIM 22-13, TASK 813 REPAIR CONFIRMATION.