SDR CALA2025071706663

Service difficulty report · Circuit Breaker · Boeing 777224

Difficulty date: July 13, 2025
Submitted: July 17, 2025
Operation: Air carrier
Aircraft: N78009
Make and model: Boeing 777224
Aircraft serial: 29479
Aircraft time: 123,567 hours, 12,661 cycles
System (JASC): 3397 · Light System Wiring
Part: Circuit Breaker
Condition: No Discrepancy
Location: Zone 200
Stage of operation: IN
How discovered: O
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

PULLED C/B H9 EMERGENCY LIGHTS DOOR 1L, H10 EMERGENCY LIGHTS DOOR 2R, H11 EMERGENCY LIGHTS DOOR 1R & 2L, H16 EMERGENCY LIGHTS DOOR 3L, H17 EMERGENCY LIGHTS DOOR 3R, H18 EMERGENCY LIGHTS DOOR 4L & 4R ON P11 FOR EPAS BATTERY REPLACEMENT. CLOSED C/BS H9, H10, H11, H16, H17, H18 ON P11 AFTER EPAS BATTERY REPLACEMENT.