# SDR DALA2026041102303

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 10, 2026
- Submitted: April 11, 2026
- Operation: Air carrier
- Aircraft: [N331DN](https://openairdocs.org/aircraft/N331DN), registered now
- Make and model: Airbus A321-213
- Registry model: [Airbus A321-213](https://openairdocs.org/model/airbus-a321-213) (OpenAirDocs)
- Aircraft serial: 7943
- Aircraft time: 26,100 hours, 11,366 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Generator
- Condition: Leaking
- Location: Apu
- Stage of operation: IN
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2026041102303

## Discrepancy

AIRCRAFT 3031, DIRTY SOCK SMELL FROM PACKS AT ALL PHASES OF FLIGHT.   FOUND APU GEN LEAKING OIL FROM THE CASE. REMOVED & REPLACED APU GEN PER A320 AMM 24-23. OPS CHECK AND LEAK CHECKS GOOD. (LP 8610375 - AIRCRAFT WAS GROUNDED)

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