Service difficulty report · Impeller · Boeing 737823

Difficulty date
July 31, 2019
Submitted
August 5, 2019
Operation
Air carrier
Aircraft
N841NN
Make and model
Boeing 737823
Aircraft serial
30914
Aircraft time
29,019 hours, 11,759 cycles
Part
Impeller
Part number
607551005
Part serial
041045084
Condition
Damaged
Location
Fuel Pump
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

AIRCRAFT WAS GROUNDED: PILOT REPORTS NR 2 FORWARD LOW PRESSURE LIGHT ILLUMINATED WITH PUMP TURNED ON. MAINTENANCE ACCOMPLISHED FIM TASK 28-22-810-806 STEP G- NO FAULTS NOTED. ACCOMPLISHED STEP H - REPLACED TANK 2 FWD BOOST PUMP LOW PRESSURE SWITCH-S153- NO HELP. SUSPECT BAD TANK #2 FWD BOOST, M49. REMOVED AND REPLACED FUEL BOOST PUMP MOTOR IMPELLER IAW AMM 28-22-41. OPS CHECK GOOD.