Service difficulty report · Sensor · Boeing 737890

Difficulty date
July 27, 2018
Submitted
August 2, 2018
Operation
Air carrier
Aircraft
N532AS
Make and model
Boeing 737890
Aircraft serial
36346
Aircraft time
31,709 hours, 9,445 cycles
Part
Sensor
Part number
H504B
Condition
Out Of Adjust
Location
Autopilot Sys
Stage of operation
IN
How discovered
C
Nature of condition
L
Precautionary procedure
K

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

What was found

STAB TRIM MOTOR FAILED TEST PER AMM 22-11-81-710-801, AMM 27-41-00-700-801, ACCOMPLISHED STAB ELEC TRIM SYSTEM TEST REF AMM 27-41-00-700-803, TEST NORMAL, COULD NOT DUPLICATE FAILED TEST. UNABLE TO PERFORM LAND VERIFY DUE TO FCC-A FAILURE. SUSPECT STAB POS SENSOR 01, FCC-A. AUTOPILOT A INOP, A/T INOP. GROUNDED - YES. ACCOMPLISHED STAB POS SENS ADJ & TEST REF AMM 22-11-31/501. ADJUSTED CH A SENSOR TO WITHIN LIMITS. ACCOMPLISHED DFCS LRU REPLACEMENT TEST FOR STAB SENS, GRP 44, REF AMM 22-11-31/501. ALL TESTS PASSED. ACCOMPLISHED A/T SYS OPERATIONAL TEST REF AMM 22-31-00-710-801. ALL TESTS PASSED. ACCOMPLISHED LAND VERIFY TEST, GRP 49, REF AMM 22-11-00-700-801. ALL TESTS PASSED.