SDR CALA2026011612994

Service difficulty report · Battery · Boeing 777222

Difficulty date: January 15, 2026
Submitted: January 16, 2026
Operation: Air carrier
Aircraft: N784UA
Make and model: Boeing 777222
Aircraft serial: 26951
Aircraft time: 114,910 hours, 14,847 cycles
System (JASC): 3350 · Emergency Lighting
Part: Battery
Part number: ADD71701100
Condition: Discharged
Location: Zone 200
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

CABIN EMERGENCY LIGHT FOUND INOP ON DOOR 3 ATTENDANT CREW REST CLOSET REF HAECO NON-ROUTINE 9493192, SUPPORT TASK. BATTERY LOW VOLTAGE, REPLACED THE POWER SUPPLY (M33099) BATTERY AND BATTERY CHARGER, THEN CARRIED OUT INSTALLATION TEST AND OPERATIONAL TEST, THE RESULT NORMAL, IAW AMM 33-51-06-960-802, 33-51-06-960-803, 33-51-00-710-801, REV.106.