Service difficulty report · Proximity Switch · Boeing 777222

Difficulty date
August 11, 2025
Submitted
August 14, 2025
Operation
Air carrier
Aircraft
N786UA
Make and model
Boeing 777222
Aircraft serial
26938
Aircraft time
111,640 hours, 14,989 cycles
Part
Proximity Switch
Condition
Failed
Location
Zone 800
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

DOOR E/E ACCESS EICAS ADVISORY, E/E ACCESS DOOR NOT FULLY CLOSED, LATCHED AND LOCKED. MESSAGE APPEARED DURING DEPARTURE CLIMB, DISCONNECTED & CAPPED ELECTRICAL CONNECTOR S52019 IN MAIN E&E COMPARTMENT. E/E ACCESS DOOR INDICATION INOPERATIVE, DEFERRED PER MEL 5271D. C/W LOCKED DUE TO HISTORY, FIM 52-48 TASK 802 FOR FAULT ISOLATION. CHRONIC HIST, NEED ADJUST OR SWITSH REPLACEMENT. REPLACED E&E COMPARTMENT PROXIMITY SWITCH S52019 IAW AMM 52-71-06-900-801. OP CHECKED GOOD. REVERSED MEL.