Service difficulty report · Relay · Boeing 737890

Difficulty date
October 9, 2015
Submitted
October 13, 2015
Operation
Air carrier
Aircraft
N564AS
Make and model
Boeing 737890
Aircraft serial
35103
Aircraft time
34,505 hours, 10,594 cycles
Part
Relay
Part number
KDAGX4F001
Condition
Failed
Location
Boost 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

NR 2 FWD FUEL PUMP LOW PRESSURE LIGHT IS ILLUMINATED. ACFT GROUNDED. NR 2 FWD BOOST PUMP HAS NO POWER. ALSO, CHECKED NR 2 PUMP SWITCH, SWITCH IS GOOD. REMOVED R21 GFI RELAY IAW AMM 28-22-18-000-801. INSTALLED R21 RELAY IAW AMM 28-22-18-400-801. PERFORMED GFI OPS TEST IAW AMM 28-22-41-720-802 FOR NR 2 FWD BOOST PUMP R21 RELAY, TEST PASSED.