Service difficulty report · Circuit Breaker · Boeing 7378H4

Difficulty date
March 24, 2026
Submitted
April 20, 2026
Operation
Air carrier
Aircraft
N8630B
Make and model
Boeing 7378H4
Aircraft serial
42521
Aircraft time
39,636 hours, 19,307 cycles
Part
Circuit Breaker
Condition
Broken
Location
Zone 200
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

BROKEN CIRCUIT BREAKER POSITION A9 AT P6-11 PANEL. REMOVED AND REPLACED CIRCUIT BREAKER ON P6-11 POSITION A9 IAW WDM 33-51-11-11 AND PERFORMED OPS TEST EMERGENCY LIGHTS IAW AMM 33-51-00-710-801 STEP 2.D(3)(A) TESTED OK.

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