Service difficulty report · Oil System · Boeing 7378

Difficulty date
October 22, 2021
Submitted
December 8, 2021
Operation
Air carrier
Make and model
Boeing 7378
Aircraft serial
39162
Aircraft time
35,282 hours, 21,238 cycles
Engine
Cfmint CFM567B262
Part
Oil System
Condition
Leaking
Location
Lt Engine
Stage of operation
IN
How discovered
9
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

LEFT ENGINE OIL LEAK. DURING TRANSIT CHECK AND IN FOLLOWING UP OF HIGH OIL CONSUMPTION AT LEFT ENGINE, IT WAS DETECTED AN OIL LEAK. MAINTENANCE PERFORMED A REVISION, DETECTING AN OIL LEAK THROUGH THE OIL INLET COVER; SO THE GASKET SEAL P/N 335-108-001-0, S/S; O-RING´S P/N 649-393-903-0, S/S AND P/N 649-788-432-0, S/S WITH TSN 32573, CSN 19868, MANUFACTURER CFM INTERNATIONAL, OF THE TURBINE REAR FRAME WERE REPLACED IAW AMM 72-56-00, TESTED CORRECT.

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