Service difficulty report · Circuit Breaker · Boeing 737

Difficulty date
April 5, 2022
Submitted
April 6, 2022
Operation
Air carrier
Aircraft
N901NN
Make and model
Boeing 737
Aircraft serial
33226
Aircraft time
28,543 hours, 11,887 cycles
Part
Circuit Breaker
Condition
Pulled
Location
Zone 200 - Fuse
Stage of operation
CR
How discovered
V
Nature of condition
J
Precautionary procedure
A

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

What was found

AIRCRAFT WAS GROUNDED: AT CRUISE, 370 NOTICED BOTH ENGINE SPAR VALVE CLOSED LIGHTS ILLUMINATED BRIGHT. AIRCRAFT DIVERTED TO PHX AND DECLARED AN EMERGENCY. FOUND CIRCUIT BREAKER B3 FUEL SPAR VALVE ENGINE 1 AND CIRCUIT BREAKER B4 FUEL SPAR VALVE ENGINE 2 OPEN ON P6-3. CLOSED CIRCUIT BREAKERS. ACCOMPLISHED FIM 28-22-00-810-809 AND FIM 28-22-00-810-810 AND ENGINES IDLE RUN. SYSTEM OPERATE NORMAL.