# SDR SWAA2026051197417

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 10, 2026
- Submitted: May 11, 2026
- Operation: Air carrier
- Aircraft: [N8997Q](https://openairdocs.org/aircraft/N8997Q), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 67319
- Aircraft time: 543 hours, 276 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cabin
- Stage of operation: TX
- 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/SWAA2026051197417

## Discrepancy

BURNING ACID SMELL IN CABIN WHEN SWITCHING FROM ENGINE BLEED TO APU BLEED.  PERFORMED CONDITIONAL INSPECTION PER 05-51-56 AND IFIM 49-52-00-810-801. NO FURTHER SMELLS OR FAULTS NOTED.

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