# SDR AALA202204067804

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 4, 2022
- Submitted: April 6, 2022
- Operation: Air carrier
- Aircraft: [N738US](https://openairdocs.org/aircraft/N738US), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 1254
- Aircraft time: 56,411 hours, 33,953 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Apu
- Part number: 38007081
- Part serial: P4104
- Condition: Odor
- Location: Zone 100 - Fuse
- Part time: 29,134 hours, 19,060 cycles
- Stage of operation: CR
- 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/AALA202204067804

## Discrepancy

AIRCRAFT WAS GROUNDED: FUMES IN FLIGHT DECK AND CABIN. SEEMED TO DISSIPATE  WITH PACK 1 OFF. ODORS WERE PRESENT WITH BOTH ENG BLEEDS AND APU BLEEDS ON. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. ** SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)

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