Service difficulty report · Pump · Boeing 7879

Difficulty date
February 10, 2023
Submitted
February 10, 2023
Operation
Air carrier
Aircraft
N17963
Make and model
Boeing 7879
Aircraft serial
37812
Aircraft time
32,843 hours, 3,116 cycles
Part
Pump
Part number
NA
Condition
Inoperative
Location
Eng #1
Stage of operation
CR
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

ENG OIL QTY DECREASING AT A RATE OF 1 QT / 20 MINUTES TUBE. REMOVED AND REPLACED MAIN FUEL PUMP AND VSFG CARBON SEAL. MAIN FUEL PUMP AND VFSG LEAK AND OPS CHECKED NORMAL. PER LOG PAGE PERFORMED TEST 6 AND TEST 4. NO VISABLE LEAKS IN DRAINS AFTER RUNS.

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