Service difficulty report · Unknown · Boeing 737990ER

Difficulty date
August 29, 2023
Submitted
August 30, 2023
Operation
Air carrier
Aircraft
N483AS
Make and model
Boeing 737990ER
Aircraft serial
36350
Aircraft time
29,637 hours, 9,269 cycles
Part
Unknown
Part number
UNKNOWN
Condition
Unknown
Location
Unknown
Stage of operation
NR
How discovered
V
Nature of condition
J
Precautionary procedure
K

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 INTERMITTENTLY ILLUMINATED ON AUTOPILOT A W/AIRPLANE IN TRIM BEFORE ENGAGEMENT.STAB OUT OF TRIM LIGHT REMAINED ILLUMINATED ON AUTOPILOT B STEADY. GROUNDED - YES. LAST LEG SHOWS DFCS A MSG 22-11177(7 HITS) STAB TRIM ACTUATOR, MSG 22-11161 COL SW MODULE M 1201, MSG 22-11186 TRIM AND RESPONSE MONITOR. ACCOMP BITE LIBRARY TEST 60.32 TEST PASSED.(REF TST 71480) STAB TRIM ACT HAS BEEN CHANGED)M SKRIVANIC 10241 08-28-2023 '' NOTE DFCS B SHOWED 5 HITS OF THE SAME MESSAGES'' M SKRIVANIC 10241 08-28-2023 ACCOMPLISHED TROUBLESHOOTING FOR STAB OUT OF TRIM LIGHT WITH DFCS BITE PROCEDURE ALL TESTS PASSED REF FIM 22-11 TASK 851. ETOPS SIGNIFICANT CHECK SUCCESSFUL SEAMC DARWIN NOTIFIED.