Service difficulty report · Actuator · Boeing 737890

Difficulty date
October 17, 2012
Submitted
October 30, 2012
Operation
Air carrier
Aircraft
N506AS
Make and model
Boeing 737890
Aircraft serial
35690
Aircraft time
16,672 hours, 5,329 cycles
Part
Actuator
Part number
251A451011
Condition
Out Of Adjust
Location
Flt Controls
Part time
16,791 hours, 5,363 cycles
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

REF T/C SB737-22A1224-NG-1-1, LAND VERIFY TEST FAILS 49.32 (S051, ELEV POS SENSOR 1). BITE NR 32 STAB TRIM TEST INTERMITTENTLY FAILS ELEVATOR POSITION SENSOR ON CHANNEL A ONLY. ACCOMPLISHED STAB AND ELEVATOR RIGGING TEST REF MM 22-11-00, ALL VALUES ARE WITHIN LIMITS. ACCOMPLISHED PITCH FORCE TRANSDUCER TEST REF MM 22-11-92,TEST PASSED. ACCOMPLISHED CAPTS CONTROL COLUMN CUTOUT SWITCH TEST, TEST PASSED REF MM 27-41-00. FOUND FOS CONTROL COLUMN SWITCH OUT OF ADJUSTMENT. ADJUSTED SWITCH, REF MM 27-41-51. CONTROL COLUMN SWITCHES TEST NML, REF MM 27-41-00. ACCOMPLISHED DFCS LRU REPLACEMENT TEST FOR PITCH SENS, REF MM 22-11-30, DFCS LRU INTERFACE TEST FOR FCC, REF MM 22-11-33, LAND VERIFY TEST, REF MM 22-11-00, AND HGS SENSOR TEST FOR FCC/AT, REF SMM 34-36-00. ALL TESTS PASSED.