# SDR DALA2026081804717

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 8, 2026
- Submitted: August 19, 2026
- Operation: Air carrier
- Aircraft: [N325DU](https://openairdocs.org/aircraft/N325DU), registered now
- Make and model: Airbus BD-500-1A11
- Registry model: [Airbus BD-500-1A11](https://openairdocs.org/model/airbus-canada-lp-bd-500-1a11) (OpenAirDocs)
- Aircraft serial: 55272
- Aircraft time: 7,555 hours, 3,066 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: 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/DALA2026081804717

## Discrepancy

FUME- DURING APU ON DEPARTURE, NOTICED WET DOG SMELL MOMENTARILY ON CLIMB. STRONG AROMA ON DECENT. DONNED O2 MASKS.  DETERMINE SOURCE OF ODOR IS FROM APU. APU DEFERRED INOPERATIVE. REPLACED RECIRC FILTERS. NO FURTHER ODORS. A/C RTS. LATER REPLACED APU. (LP 9568150, 9568152 - AIRCRAFT WAS GROUNDED)

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