Service difficulty report · Battery Pack · Boeing 777223

Difficulty date
January 8, 2026
Submitted
January 10, 2026
Operation
Air carrier
Aircraft
N757AN
Make and model
Boeing 777223
Aircraft serial
32636
Aircraft time
91,276 hours, 11,850 cycles
Part
Battery Pack
Part number
410045091
Part serial
68267A7
Condition
No Test
Location
Zone 800 Epas
Stage of operation
IN
How discovered
C
Nature of condition
L
Precautionary procedure
K

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

What was found

AIRCRAFT IN BASE MAINTENANCE: WHILE PERFORMING EPAS BATTERY OPS CHECK (AMM 52-11-20-700-803-002) THE AMBER SQUIB CONTINUITY LIGHT ON THE EPAS BATTERY PACK DOES NOT ILLUMINATE AT DOOR 2R. MAINTENANCE REPLACED THE EPAS RESERVOIR ASSY IAW AMM 52-11-22.