SDR SWAA2025110531911

Service difficulty report · Control Unit · Boeing 7378

Difficulty date: November 4, 2025
Submitted: November 5, 2025
Operation: Air carrier
Aircraft: N8918Q
Make and model: Boeing 7378
Aircraft serial: 68206
Aircraft time: 6,059 hours, 3,206 cycles
System (JASC): 2430 · DC Generating System
Part: Control Unit
Condition: Faulted
Location: Zn 100 Fus Lower
Stage of operation: CR
How discovered: O
Nature of condition: G, J
Precautionary procedure: A

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

What was found

BATTERY BUSS SECT 2 CIRCUIT BREAKER TRIPPED AT 38;000. BOTH PACK LIGHTS ILLUMINATED, STBY POWER OFF LIGHT, NR 2 REVERSER ALL ILLUMINATED. B AUTOPILOT, PA, CABIN INTERCOM & APU GEN LIGHTS INOPERATIVE. ALL RESET AFTER CIRCUIT BREAKER RESET. MAINT LIGHT ILLUMINATED ON TOUCHDOWN. NO PRESSURIZATION EVENT OCCURRED. R & R SPCU IAW AMM 24-34-11.

More about the Boeing 737-8