Service difficulty report · Sensor · Boeing 737890

Difficulty date
January 19, 2015
Submitted
January 21, 2015
Operation
Air carrier
Aircraft
N568AS
Make and model
Boeing 737890
Aircraft serial
35183
Aircraft time
30,578 hours, 9,482 cycles
Part
Sensor
Part number
H504B
Part serial
22416
Condition
Out Of Limits
Location
Elevator
Part time
3,607 hours, 1,105 cycles
Stage of operation
IN
How discovered
9
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

WHILE ACCOMPLISHING ELEVATOR RIGGING TEST, FOUND ELEVATOR POSITION SENSOR VALUES OUT OF LIMITS. ACFT GROUNDED. ADJUSTED ELEVATOR POSITION SENSOR, REF MM 22-11-30-820-801. ADDITIONAL LWMP TESTS REQUIRED. ELEV POS SENSOR STILL FAILS ELECTRICAL RIGGING TEST. NEEDS REPLACEMENT. REPLACED ELEVATOR POSITION SENSOR, OPS CHECK GOOD MM 22-11-30. ADDITIONAL LWMP TEST DFCS BITE GRP 47, NORMAL. ACFT REMAINS CAT IIIA AUTOLAND AND HGS QUALIFIED. STATUS PLACARD VERIFIED TO REFLECT SAME.