Service difficulty report · Circuit Breaker · Boeing 737890

Difficulty date
August 13, 2014
Submitted
August 19, 2014
Operation
Air carrier
Aircraft
N570AS
Make and model
Boeing 737890
Aircraft serial
35185
Aircraft time
28,419 hours, 8,488 cycles
Part
Circuit Breaker
Condition
Tripped
Location
Fuel Boost Pump
Part time
47,614 hours, 17,187 cycles
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
D

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

What was found

DURING TAXI OUT, A LEFT CENTER TANK FUEL BOOST PUMP LIGHT ILLUMINATED WITH THE SWITCH ON. CENTER TANK FUEL WAS 2.11 LBS. ACFT GROUNDED. FOUND THE LT CENTER BOOST PUMP CIRCUIT BREAKER OPEN. REST CIRCUIT BREAKER IAW AMM 20-60-01-860-801 AND COMPLIED WITH FIM 28-22 TASK 817, CIRCUIT BREAKER REMAINS SET. PUMP PASSES FIM CHECKS, BUT REQUIRES REPLACEMENT IAW FIM TASK DUE TO CRITICAL DESIGN CONTROL LIMITATIONS. REPLACED LT CENTER TANK BOOST PUMP MOTOR IAW AMM 28-22-41-000-801 AND AMM 28-22-41-400-801. OPS CHECKED GOOD. CIRCUIT BREAKER REMAINS SET. NO LEAKS. NO ADJUSTMENT MADE.