Service difficulty report · Pump · Boeing 7878

Difficulty date
May 8, 2023
Submitted
May 8, 2023
Operation
Air carrier
Aircraft
N27908
Make and model
Boeing 7878
Aircraft serial
36400
Aircraft time
38,186 hours, 4,603 cycles
Part
Pump
Part number
182513001
Part serial
151104989
Condition
Unknown
Location
L1, R1 & L6
Part time
17,815 hours, 3,337 cycles
Stage of operation
CL
How discovered
O
Nature of condition
O
Precautionary procedure
A

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

What was found

BOTH CENTER FUEL PUMPS FAILED SIMULTANEOUSLY PERF CTR L AND R PUMP OPERATION. FOUND PUMPS TO OPERATE NORMAL. PERF GRND TEST AND PASSED. MX MSG CLEARED. REPLACED 3 GPMS C/W LMC. REPLACED GPM R1 REF DMC-B787-A-42-21-02-09A-921A-A SOFTWARE LOADS AND GROUND TESTS SATISFACTORY. REPLACED GPM L1 REF DMC-B787-A-42-21-02-01A-921A-A SOFTWARE LOADS AND GROUND TESTS SATISFACTORY. REPLACED GPM L6 REF DMC-B787-A-42-21-02-06A-921A-A SOFTWARE LOADS AND GROUND TESTS SATISFACTORY. ALL SOFTWARE LOADS, CONFIG CHECKS, AND GROUND TEST SATISFACTORY.

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