Service difficulty report · Actuator · Boeing 777222

Difficulty date
July 16, 2025
Submitted
July 21, 2025
Operation
Air carrier
Aircraft
N768UA
Make and model
Boeing 777222
Aircraft serial
26919
Aircraft time
105,833 hours, 19,833 cycles
Part
Actuator
Condition
Faulted
Location
Door Lock
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 #3 LEFT PASSENGER ENTRY DOOR FLIGHT LOCK COMMAND/FLT LK RLY/SENS OR DISAGREEMENT. DB PSEU 2 (R2) DB PSEU 2 (L2) 3L PASSENGER ENTRY DOOR FLIGHT LOCK SYSTEM(S) INOPERATIVE. REQ MEL 5211E TOMC APPROVES MEL 5211E FLIGHT DOOR LOCK AT 3L INOP 3L PASSENGER ENTRY DOOR FLIGHT LOCK SYSTEM(S) INOPERATIVE.DDP C/W. *DM* REF. MX FAULT MSG 52-11320, 52-12160, AND 52-12170 FIM 52-11 TASK 805 & 809 FOR FAULT ISOLATION, ADDING PED FLT LOCK ACTUATOR AND PROX SENSOR TO M&L IN CASE NEEDED. NOTE: REPEAT WRITE-UP. REF FIM 52-11 TASK 805, PERFORMED FLIGHT LOCK CONTROL TEST PPER AMM 52-11-26-740-801, LOCK ACTUATOR FAILS TEST, DOOR DOES NOT LOCK. SUSPECT BAD ACTUATOR M&E # 27-5212-9-0001