# SDR ASAA2023110646064

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 6, 2023
- Submitted: November 9, 2023
- Operation: Air carrier
- Aircraft: [N953AK](https://openairdocs.org/aircraft/N953AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 44103
- Aircraft time: 4,066 hours, 1,179 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Filter Element
- Part number: 38809381
- Condition: Dirty
- Location: Apu Oil
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023110646064

## Discrepancy

DURING GVI ON APU FOUND BYPASS INDICATOR POPPED ON LUBE FILTER ELEMENT. GROUNDED - YES. REMOVED & REPLACED APU LUBE FILTER ELEMENT & RESET BYPASS INDICATOR. OPS CHECK GOOD. NO LEAKS FOUND. REF AMM 49-91-12-400-801 SEAMC NOTIFIED.

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