# SDR ASAA2023110746078

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 7, 2023
- Submitted: November 9, 2023
- Operation: Air carrier
- Aircraft: [N973AK](https://openairdocs.org/aircraft/N973AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43346
- Aircraft time: 6,426 hours, 1,849 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Oil Filter
- Part number: 7590361101
- Condition: Clogged
- Location: Apu
- Stage of operation: IN
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023110746078

## Discrepancy

APU LUBE MODULE LUBE FILTER DPI POPPED WILL NOT RESET. GROUNDED - YES. (RESOLVED ON W/O: 1975989 TASKCARD: N/R-00004 ) REMOVED AND REPLACED OIL FILTER ELEMENTS REF AMM 49-91-12. NO LEAKS NOTED. DPI WAS RESET. PERFORMED APU STARTING AND OPERATION REF AMM 49-11-00, OPS CHECK GOOD. PERFORMED APU BITE PROCEDURE REF AMM 49-61-00. NO FAULTS NOTED. THIS CLEARS MEL 49-11-01. PLACARDS REMOVED. SEAMC  NOTIFIED.

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