Service difficulty report · Circuit Breaker · Boeing 737890

Difficulty date
March 22, 2019
Submitted
March 25, 2019
Operation
Air carrier
Aircraft
N563AS
Make and model
Boeing 737890
Aircraft serial
35180
Aircraft time
46,938 hours, 14,038 cycles
Part
Circuit Breaker
Condition
Tripped
Location
Fuel System
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
K

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

What was found

LEFT AFT MAIN TANK FUEL PUMP SWITCH ILLUMINATED. GROUNDED - YES. FOUND TANK 1 AFT FUEL BOOST CB OPEN ON P92 PANEL NO DEBRIS FOUND. INSPECTION OF P92 PANEL GOOD. RESECURED P92 PANEL RESET BOOST PUMP CB. OPERATED BOOST PUMP FOR 10 MINS, TURNED OFF AND OPERATED FOR 5 MINS, CHECKS GOOD IAW FIM 28-22 TASK 803. DETERMINED TO BE INTERMITTENT FAULT.