- Difficulty date
- June 15, 2023
- Submitted
- June 15, 2023
- Operation
- Air carrier
- Make and model
- Boeing 7379
- Aircraft serial
- 44087
- Aircraft time
- 7,874 hours, 2,409 cycles
- Part
- Element
- Part number
- 38809381
- Condition
- Clogged
- Location
- Apu
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING ASA TSR714484 FOUND APU DIFF PRESS/ INDICATOR BUTTON POPPED. GROUNDED - YES. REPLACED LUBE FILTER ELEMENT AND APU OIL FILTER INDICATOR REF B737-9 AMM 49-91-12 AND AMM 49-91-13 LEAK CHECK GOOD, NO FAULTS NOTED DURING GROUND VERIFICATION.