Service difficulty report · Oil System · Boeing 7378

Difficulty date
October 19, 2021
Submitted
December 8, 2021
Operation
Air carrier
Make and model
Boeing 7378
Aircraft serial
43705
Aircraft time
6,340 hours, 2,601 cycles
Engine
Cfmint LEAP1B21
Part
Oil System
Condition
Leaking
Location
Rt Engine
Stage of operation
NR
How discovered
V
Nature of condition
K
Precautionary procedure
O

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

What was found

RIGHT ENGINE OIL LEAK DURING STOP ENGINE. DURING TRANSIT CHECK, IT WAS DETECTED A RIGHT ENGINE OIL LEAK DURING STOP ENGINE. MAINTENANCE PERSONNEL PERFORMED REVISION; DETECTING OIL DROPS ON RIGHT ENGINE SUMP DRAIN OF 35 DROPS PER MINUTE; THE RIGHT ENGINE HIGH POWER RUN AT 70% OF N1 WITHOUT OIL LEAK AND IDLE WITH 540 CC/HR OF OIL LEAK RATE FROM C-SUMP DRAIN WITHIN LIMITS IAW AMM TASK 71-00-00-800-802, TESTED CORRECT.

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