# SDR AALA202205315505

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 28, 2022
- Submitted: May 31, 2022
- Operation: Air carrier
- Aircraft: [N125UW](https://openairdocs.org/aircraft/N125UW), registered now
- Make and model: Airbus A300*
- Aircraft serial: 4086
- Aircraft time: 33,563 hours, 18,185 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Part number: 38007081
- Condition: Odor
- Location: Zone 100 - Fuse
- Stage of operation: DE
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202205315505

## Discrepancy

AIRCRAFT WAS GROUNDED: MUSTY SMELL NOTICED WHEN WE ARRIVED AT AIRCRAFT IN TPA. DISSIPATED WHILE ENROUTE AND CAME BACK STRONGER WHEN WE STARTED DESCENT. SMELL BECAME NOTICEABLY STRONGER DESCENDING THRU FL 250. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. **SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)

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