# SDR DALA2026072904389

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 29, 2026
- Submitted: July 29, 2026
- Operation: Air carrier
- Aircraft: [N351NB](https://openairdocs.org/aircraft/N351NB), registered now
- Make and model: Airbus A319-114
- Registry model: [Airbus A319-114](https://openairdocs.org/model/airbus-a319-114) (OpenAirDocs)
- Aircraft serial: 1820
- Aircraft time: 54,878 hours, 28,821 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Condition: Odor
- Location: Zone 100
- Stage of operation: CR
- 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/DALA2026072904389

## Discrepancy

CREW MENTIONED DIRTY SOCK SMELL THROUGHOUT ALL PHASES OF FLIGHT. TURN ON APU BLEED AND SMELLED FUMES AROUND MID CABIN.  PERFORMED P TRAK INITIAL RUNS REF AMDS 0550-2001 RESULTS SENT TO MCC (A. HERMS 948587) C/W MSI LOG 1723981 STEP'S A-G RECORD'S SENT TO MCC STILL REQUIRES STEPS H-L TO BE C/W. CONTAMINATION WAS FOUND IN APU INLET. PER MCC, C/W WORK CARD 2100-2005; REF LOG 9080480. C/W STEPS H-L. ODOR WAS ELIMINATED ON SECOND P-TRAK RUN W/ APU UNUSED. FWD APU TO MEL 49 -10-01A AND PLACARD. (M) PROC. C/W. DISPATCH GRANTED. ALL MSI PROC. C/W. (LP: 9080478, AIRCRAFT WAS GROUNDED)

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