Service difficulty report · Relay · Boeing 737890

Difficulty date
February 20, 2010
Submitted
February 23, 2010
Operation
Air carrier
Aircraft
N570AS
Make and model
Boeing 737890
Aircraft serial
35185
Aircraft time
11,653 hours, 3,368 cycles
Part
Relay
Part number
MS274182A
Condition
Faulty
Location
Fuel System
Stage of operation
CR
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 CTR FUEL LOW PRESS LIGHT CAME ON AT CRUISE 16,500 LBS IN CTR TANK (RT CTR PUMP WORKS OK). INSPECTED LT CTR FUEL PUMP WIRINGS AND FOUND TERMINALS AT RELAY R962 ARE TOO CLOSE TO EACH OTHER CAUSING C/B C845 TO POPPED. REPOSITION TERMINALS AND OPS. TEST LT CTR FUEL PUMP IAW AMM TASK 28 22 41 PAGE BLOCK 501. OPERATED FUEL PUMPS FOR 30 MINS WITH NO DEFECTS. VERIFIED LEFT CTR FUEL BOOST PUMP CIRCUIT BREAKER C845 POPPED WHEN SWITCH WAS TURNED ON PRIOR TO DEFECTS FINDING. CONFIRMED LEFT CTR FUEL BOOST PUMP OPERATED CORRECTLY WITH C/B C845 NO LONGER POPS AFTER CORRECTIVE ACTIONS HAS BEEN ACCOMPLISHED. NOTIFIED SEAMC.