Service difficulty report · Engine · Boeing 7377Q8

Difficulty date
May 17, 2025
Submitted
May 21, 2025
Operation
Air carrier
Aircraft
N7859B
Make and model
Boeing 7377Q8
Aircraft serial
30641
Aircraft time
63,181 hours, 34,384 cycles
Engine
Cfmint CFM567B20
Part
Engine
Condition
Making Metal
Location
Nr 2
Stage of operation
CR
How discovered
9
Nature of condition
J
Precautionary procedure
A

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

What was found

NR 2 ENGINE OIL FILTER BYPASS LIGHT. PERFORMED FIM TASK 79-05 TASK 817. FOUND NO DISAGREE MESSAGES & NO CLOGGED STATE. PERFORMED PARAG E STEP 3 (C), INSPECTED CHIP DETECTOR IAW AMM 79-00-00-200-804-F00. FOUND LARGE CHUNKS OF METAL INSIDE SCAVENGE SCREEN FROM AGB/TGB SCAV MCD. REMOVED NR 2 ENG SCAV FILTER FOUND MED & FINE PARTICLES, INSTALLED NEW FILTER & LEAK CHKD IAW AMM 79-29-07. FILTER ROUTED FOR ANALYSIS. REMOVED NR 2 ENG OIL SUPPLY FILTER, FOUND MINOR FINE PARTICLES, INSTALLED NEW FILTER & LEAK CHKD IAW AMM 79-29-06. FILTER ROUTED FOR ANALYSIS. PERFORMED A HIGH POWER RUN FOR 20 MINS IAW AMM 71-00-00. INSPECTED CHIP DETECTORS IAW AMM 79-00-00 . FWD TWO CHIP DETECTORS HAD METAL.

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