Service difficulty report · Actuator · Boeing 737824

Difficulty date
August 8, 2025
Submitted
August 11, 2025
Operation
Air carrier
Aircraft
N27239
Make and model
Boeing 737824
Aircraft serial
28951
Aircraft time
79,285 hours, 29,655 cycles
Part
Actuator
Part number
158300101
Part serial
22099
Condition
Faulted
Location
Ailerons
Part time
2,613 hours, 1,215 cycles
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
B, A

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

What was found

THREE UNCOMMANDED RIGHT ROLL INPUTS MADE WHILE ON COMMAND A AUTO PILOT. THE FIRST HAPPENED THRU CHECKED DFCS BITE NO FAULTS NOTED, ALSO CHECKED SMYD COMPUTERS ALSO NO FAULTS NOTED. TEC SUPPORT RECOMMENDS AUTO PILOT A AILERON ACTUATOR REPLACEMENT REMOVED AND REPLACED AILERON AUTOPILOT ACTUATOR A REF. AMM 22-11-25-400-801 LEAK CHECKS AND OPS CHECKS GOOD. INSP INSTALLATION OF THE AILERON A/P ACRUATOR A IN REF TO AMM 22-11-25-400-801. ACTUATOR LKS OPS CHECKS GOOD.