# SDR DALA2026040802235

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 6, 2026
- Submitted: April 8, 2026
- Operation: Air carrier
- Aircraft: [N335NB](https://openairdocs.org/aircraft/N335NB), registered now
- Make and model: Airbus A319-114
- Registry model: [Airbus A319-114](https://openairdocs.org/model/airbus-a319-114) (OpenAirDocs)
- Aircraft serial: 1662
- Aircraft time: 61,276 hours, 31,960 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Plenum
- Condition: Contaminated
- Location: Apu
- Stage of operation: AP
- How discovered: O
- Nature of condition: C, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2026040802235

## Discrepancy

OIL ODOR THROUGHOUT CABIN & COCKPIT ON ACFT ENTRY.  APU LEAK CHK & INSP FOR CONTAMINATION C/W ON LOG 8044937, COMPLETES SMOKE AND FUMES WORKCARD 0550-2002 AND 0550- 2001 AND DUE TO PREVIOUS HIS ON NR 2 ENG. COMPLETED ENG 1 & 2 BOROSCOPE WORKCARD 7900-2001. REINSPECTED APU BAY & FOUND OIL CONTAMINATION IN PLENUM. C/W WORKCARD 2100-2005 ECS DECONTAMINATION REVERSE DUCT PROCEDURES. PERFORMED LVL A & LVL B ECS REMOVAL CONTAMINATION IAW AMM 21-00-00-615-802A/803A WITH SNIFFER. ODOR FAINTLY REMAINS WITH SNIFFER REACHING 80K. R & R RECIRC FILTERS IAW AMM 21-21 & AVIONICS VENT FILTER IAW AMM 21-26. PERFORMED LVL A & LVL B ECS DECONTAMINATION AGAIN IAW AMM 21-00-00-615-802A/803A. NO ODOR PRESENT, SNIFFER READING 30K. (LP: 8044936) AIRCRAFT GROUNDED.

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