Service difficulty report · Actuator · Boeing 737890

Difficulty date
May 14, 2021
Submitted
May 17, 2021
Operation
Air carrier
Aircraft
N568AS
Make and model
Boeing 737890
Aircraft serial
35183
Aircraft time
50,481 hours, 15,153 cycles
Part
Actuator
Condition
Out Of Rig
Location
Autopilot Sys
Part time
50,487 hours, 15,154 cycles
Stage of operation
LD
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

INFO ONLY AUTOLAND NOT SUCCESSFUL. GROUNDED - YES. ACCOMP LAND VERIFY TEST REF B737-800 AMM 22-11-00/201. TEST FAILED FOR AIL POS SEN-2 AND AIL POS SEN-1. REMOVED AND REPLACED AIL POS SEN REF AMM 22-11-29-400-801. NO HELP. REPLACED THE AILERON POSITION SENSOR AGAIN PER AMM 22-11-29/401. DURING RIG TESTING, FOUND AILERON AUTOPILOT ACTUATORS (BOTH) OUT OF RIG. ADJUSTED AILERON AUTOPILOT ACTUATORS PER AMM 22-11-25-820-801. NOW WITHIN LIMITS. THE AILERON POSITION SENSOR RIG NOW CHECKS GOOD PER AMM 22-11-29-820-801. LAND VERIFY TESTS NORMAL PER AMM 22-11-00/201.