Service difficulty report · Relay · Boeing 737990

Difficulty date
January 10, 2013
Submitted
January 15, 2013
Operation
Air carrier
Aircraft
N407AS
Make and model
Boeing 737990
Aircraft serial
41731
Aircraft time
261 hours, 100 cycles
Part
Relay
Part number
KDAE4F
Condition
Inoperative
Location
Fuel Pump
Stage of operation
IN
How discovered
V
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

RIGHT FWD FUEL PUMP LOW PRESSURE ANNUNCIATOR ILLUMINATED ON GROUND WITH PUMP SWITCH ON AND 6000 LBS IN TANK. FOUND R21 RELAY INOPERATIVE. R & R R21 RELAY IAW WDM 28-23-11. OPS TESTED, GROUND FAULT INTERRUPTED CIRCUIT FOR RT FWD BOOST PUMP IAW MM 28-22-41-720-802. OPS NORMAL. RT FWD BOOST PUMP OPS NORMAL.