Service difficulty report · Switch · Boeing 777222

Difficulty date
September 7, 2025
Submitted
September 10, 2025
Operation
Air carrier
Aircraft
N783UA
Make and model
Boeing 777222
Aircraft serial
26950
Aircraft time
114,800 hours, 15,007 cycles
Part
Switch
Condition
Faulted
Location
Zone 800
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 BULK CARGO EICAS ADVISORY BULK CARGO DOOR NOT FULLY CLOSED, LATCHED AND LOCKED. REFERENCE PREVIOUS HISTORY REQUEST MEL 5271F. MEL REQUESTED DUE TO INDICATION HISTORY, DOOR TO BE VERIFIED CLOSED BEFORE EACH FLIGHT TOMC APPROVES MEL 5271F COMPLIED WITH MEL 5271F *DM* DUE TO BULK CARGO IND FAULTS DURING DESCENT BUILDING HISTORY WITH NO PARTS RPLCD - RECOMMEND TO R+R SWITCH S52020 - ALSO RECOMMEND TO ENSURE THE SWITCH AND ASSOSCIATED WIRING HAS A GOOD GRND AND THE WIRE IS NOT DAMAGED. SWTCH S52020 ALREADY ON M+L IF NEEDED REMOVED AND REPLACED BULK CARGO DOOR SWITCH, OPS CHECK GOOD REF AMM 52-71-04-900-80.