Service difficulty report · Pump · Boeing 737890

Difficulty date
April 13, 2021
Submitted
April 23, 2021
Operation
Air carrier
Aircraft
N533AS
Make and model
Boeing 737890
Aircraft serial
35201
Aircraft time
38,304 hours, 11,063 cycles
Engine
Cfmint CFM567B27
Part
Pump
Part number
8283005
Part serial
YA053796V
Condition
Leaking
Location
Nr 1 Engine Fuel
Part time
38,362 hours, 11,083 cycles
Stage of operation
IN
How discovered
V
Nature of condition
K
Precautionary procedure
K

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

What was found

WHILE ACCOMPLISHING T/C 78472022 FOUND FUEL LEAKING FROM FUEL PUMP PAD DRAIN ON #1 ENG. GROUNDED - YES. ACCOMPLISHED LEAK CHECK REF B737-800 AMM 71-7100-801-F00 FOUND LESS THAN 90 DPM. REMOVED AND REPLACED #1 ENG FUEL PUMP REF AMM 73-11-01-400-801-F00. COMPLETED POWERPLANT TESTS 12 AND 13 REF AMM 71-00-00-800-F00. ACTUATORS TEST AND EEC BITE TEST GOOD TEST 3A IDLE LEAK CHECK FAILED, LEAKS NOTED AT TWO FUEL TUBES ON HMU LEAKS. COMPLETED TESTS 2, 12, 13 REF AMM 71-00-00-800-F00 FOR FUEL PUMP PACKAGE TEST REQUIRED. REPLACED SEALS ON FUEL TUBE 35 AND 17 REF TASKCARD N8473001 SHEET 3 FIG 401, LEAK CHECK GOOD TEST 3A LEAK CHECK GOOD COMPLETED FUEL PUMP PACKAGE INSTALL PER AMM 73-11-01-400-801-F00. AND T/C N8473001, OPS ND LEAK CHECK GOOD.