# SDR DALA2026050902930

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 29, 2026
- Submitted: May 9, 2026
- Operation: Air carrier
- Aircraft: [N532DN](https://openairdocs.org/aircraft/N532DN), registered now
- Make and model: Airbus A321-271NX
- Registry model: [Airbus A321-271NX](https://openairdocs.org/model/airbus-s-a-s-a321-271nx) (OpenAirDocs)
- Aircraft serial: 11279
- Aircraft time: 12,996 hours, 3,208 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cabin
- Stage of operation: DE
- 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/DALA2026050902930

## Discrepancy

ON DECENT THRU FL110, DIRTY SOCK & STINKY PAINT SMELL REPORTED IN FLT DECK AND CABIN. FLT CREW DECLARED AN EMERGENCY AND DONNED O2 MASKS.   P-TRAK SNIFFER SHOWED PARTICLE SPIKE ON BOTH PACKS USING APU BLEED. APU PLACED ON MEL. PERFORMED ECS LEVEL B DECONTAMINATION. NO FURTHER ODOR NOTED AND P-TRAK READINGS GOOD. LATER, PERF APU COMPARTMENT & APU INSPECTION USING UV LIGHT. FOUND NO TRACE OF OIL CONTAMINATION IN COMPRESSOR, INTAKE OR EXTERNAL LEAKS. RAN APU & PACKS IN ALL MODES & N0 ODOR PRESANT. (LP 8537562, 8537568 - AIRCRAFT WAS GROUNDED)

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