# SDR ASAA2021112236678

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 22, 2021
- Submitted: November 24, 2021
- Operation: Air carrier
- Aircraft: [N577AS](https://openairdocs.org/aircraft/N577AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35186
- Aircraft time: 52,610 hours, 15,642 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Element
- Part number: 38809381
- Condition: Clogged
- Location: Apu
- Stage of operation: IN
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021112236678

## Discrepancy

WHILE PERFORMING T/C N8349002. FOUND RED BUTTON ON APU OIL FILTER INDICATOR IS EXTENDED. GROUNDED - YES. REMOVED AND REPLACED APU LUBE FILTERS REF B737-800 AMM 49-91-12, OPS CHECK GOOD, NO LEAKS NOTED.

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