What was found
FOUND APU LUBE FILTER HOUSING BUTTON POPPED. GROUNDED - YES. REPLACED APU LUBE FILTER ELEMENT. NO DEBRIS FOUND IN BOWL/FILTER. DPI RESET. LEAK CHECK GOOD. REF. B737-900 AMM 49-91-12.
- Difficulty date
- February 2, 2023
- Submitted
- February 4, 2023
- Operation
- Air carrier
- Aircraft
- N433AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41704
- Aircraft time
- 34,305 hours, 10,852 cycles
- System (JASC)
- 4990 · APU Oil System
- Part
- Element
- Part number
- 38809381
- Part serial
- NOTREPORTED
- Condition
- Clogged
- Location
- Apu
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.