Service difficulty report · Reservoir · Boeing 777222

Difficulty date
July 10, 2025
Submitted
July 11, 2025
Operation
Air carrier
Aircraft
N799UA
Make and model
Boeing 777222
Aircraft serial
26926
Aircraft time
109,619 hours, 14,435 cycles
Part
Reservoir
Part number
410045091
Part serial
46238A7
Condition
Unserviceable
Location
Zone 800
Part time
19,072 hours, 2,901 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

REF LOGPAGE 5503810, DOOR 2R EPAS SYSTEM DEPLOYED DURING SCHEDULED SLIDE REPLACEMENT. SYSTEM WAS DEACTIVATED AND DISARMED, BUT ACTIVATED DURING SLIDE REMOVAL REGARDLESS. SLIDE DID NOT DEPLOY. REPLACED DOOR 2R EPAS BATTERY PACK AS A PRECAUTIONARY MEASURE DUE TO DEPLOYMENT OF EPAS SYSTEM. COMPLETED AMM 52-11-20-400-813 UP TO AND INCLUDING 3.E.(1)(E). COULD NOT CLOSE CIRCUIT BREAKERS YET DUE TO INSTALLATION OF NEW EPAS RESERVOIR NOT BEING COMPLETE. REMOVED AND REPLACED DOOR R2 EPAS RESERVOIR REF AMM 52-11-22, AND COMPLETED BATTERY PACK INSTALLATION REF AMM 52-11-20. OPS CHECK GOOD.