Service difficulty report · Actuator · Boeing 777222

Difficulty date
November 6, 2025
Submitted
November 10, 2025
Operation
Air carrier
Aircraft
N223UA
Make and model
Boeing 777222
Aircraft serial
30224
Aircraft time
95,302 hours, 11,309 cycles
Part
Actuator
Part number
933D1001
Part serial
690
Condition
Faulted
Location
Zone 800
Part time
795,293 hours, 711,308 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

DOOR FLIGHT LOCK 3L EICAS STATUS, NR 3 LEFT PASSENGER ENTRY DOOR FLIGHT LOCK COMMAND/FLT LK RLY/SENS OR DISAGREEMENT. FOUND MX MESSAGES ON MAT NOT ACTIVE UPON ARRIVAL. RAN DOOR FLIGHT LOCK GROUND TEST ON MX MAT AND ALL DOORS LOCKED EXCEPT DOOR 3L. VERIFIED DOOR 3L CAN BE OPENED ON GROUND PER DDP DM IAW MX FAULT MSG 52-11325, 52-12160, & 52-12170 FIM 52-11 TASK 805 & 809 FOR FAULT ISOLATION, BEFORE DEPARTURE FROM EZE 06NOV2025 WAS CHECKED THAT 3L PASSENGER DOOR CAN BE OPENED USING INTERIOR HANDLE PER MEL CARD 52010. PERFORMED FIM 52-11 TASK 805 MAINTENENCE MESSAGE 52-11320. VOLTAGE WITHIN LIMITS. R & R 3L FLIGHT LOCK ACTUATOR IAW AMM 52-11-26-400-801. OPS CHECK GOOD. TEST PASSED. NO MESSAGES.