# SDR CALA2026091719493

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 16, 2026
- Submitted: September 17, 2026
- Operation: Air carrier
- Aircraft: [N17431](https://openairdocs.org/aircraft/N17431), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43528
- Aircraft time: 2,565 hours, 892 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cabin
- Stage of operation: NR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026091719493

## Discrepancy

ACRID OILY ODOR IN A/C AIR FOLLOWING HYDRAULIC SERVICING W/BOTH PACKS RUNNING OFF APU BLEED.  ACP TASK FIM 21-00-830 SMOKE OR FUMES IN CABIN SOURCE UNKNOWN. RAN BOTH ENGINES FOR 5 MINUTES RAN BOTH PACKS AND VERIFIED NO ODOR IN FLT DECK AND WALKED THROUGH CABIN.UNABLE TO DUPLICATE ANY OIL ODOR OR FUMES IN CABIN.ALSO SWITCHED BOTH PACKS TO RUN ON APU PNEUMATICS AND NO ISSUE.  ACP FIM 21-00-830 TO ITEM F.

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