What was found
ENG OIL FILTER SENSOR L THE PRESSURE SWITCH FOR DETECTING IMPENDING OIL FILTER BYPASS ON THE LEFT ENGINE HAS FAILED. REPLACED OIL FILTER DIFFERENTIAL PRESSURE SWITCH. RAN ENG, OPS CHECK NORMAL.
- Difficulty date
- September 3, 2009
- Submitted
- September 4, 2009
- Operation
- Air carrier
- Aircraft
- N228UA
- Make and model
- Boeing 777222
- Aircraft serial
- 30556
- Aircraft time
- 31,544 hours, 3,904 cycles
- Engine
- Pwa PW40903
- System (JASC)
- 7920 · Engine Oil Distribution (Airframe Furnished)
- Part
- Pressure Switch
- Part number
- 21SN04459
- Part serial
- 151
- Condition
- Faulty
- Location
- Lt Engine
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.