Service difficulty report · None · Boeing 777

Difficulty date
September 30, 2022
Submitted
September 30, 2022
Operation
Air carrier
Aircraft
N784UA
Make and model
Boeing 777
Aircraft serial
26951
Aircraft time
101,444 hours, 13,301 cycles
Part
None
Part number
NA
Condition
Failed
Location
Aft
Stage of operation
UK
How discovered
O
Nature of condition
O
Precautionary procedure
A, O

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

What was found

*EMERGENCY DECLARED *OUTFLOW VALVE AFT EICAS ADVISORY AUTO CONTROL ON AFT OUTFLOW VALVE FAILED OR MANUAL MODE FOR AFT OUTFLOW VALVE SELECTED. FIM TASK REF : FIM TASK REFERENCE NOT FOUND CMC MSG# 2139040 FLIGHT STATUS: A INTERMITTENCE CODE: M PH: CLIMB. NARRATIVE: AIR SUPPLY & CABIN PRES SURE CONTROLLER (R) REMOVED AND REPLACED AFT ACUATOR CONTROL ASSY REF AMM 21-31-03-400-810-001 ADD EMP:U383471 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1058122 SN OFF 3516 ACTUATOR, CONTR OFF 27-2133-9-0001 3516 ON 27-2133-9-0001 3181