# SDR WX0A2024122032237

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 19, 2024
- Submitted: December 20, 2024
- Operation: Air carrier
- Aircraft: [N324NV](https://openairdocs.org/aircraft/N324NV), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 2709
- Aircraft time: 49,930 hours, 30,493 cycles
- System (JASC): [2170 · Humidity Control System](https://openairdocs.org/jasc/2170)
- Part: Fcu
- Condition: Leaking
- Location: Apu
- Stage of operation: DE
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/WX0A2024122032237

## Discrepancy

(AIRCRAFT NOT GROUNDED) DESCENDING THROUGH 28,500 FEET F/A'S REPORTED STRONG DIRTY SOCK ODOR. WE FOLLOWED THE QRH SUPPLEMENTAL PROCEDURE AND THE ODOR DEMINISHED GREATLY WITH PACK  1 OFF. FOUND APU FCU LEAKING. REMOVED AND REPLACED APU FCU IAW AMM 49-32-11-000-003-A AND 49-32-11-400-003-A. OPS CHECK GOOD. ITEM: 1C/W TC 21-000-002. FOUND APU FCU LEAKING. REMOVED AND REPLACED APU FCU IAW AMM 49-32-11-000-003-A AND 49-32-11-400-003-A. OPS CHECK GOOD.ITEM: 1C/W TC 21-000-002. FOUND APU FCU LEAKING. REMOVED AND REPLACED APU FCU IAW AMM 49-32-11-000-003-A AND 49-32-11-400-003-A. OPS CHECK GOOD.

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