# SDR AALA201802019001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 29, 2018
- Submitted: February 2, 2018
- Operation: Air carrier
- Aircraft: [N916US](https://openairdocs.org/aircraft/N916US), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6420
- Aircraft time: 10,894 hours, 4,265 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Module
- Condition: Leaking
- Location: Apu
- Stage of operation: CL
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201802019001

## Discrepancy

AIRCRAFT WAS GROUNDED. ON CLIMB OUT TO 5000 FEET OR SO AND ON ARRIVAL BELOW 5000 FEET A DIRTY SOCK SMELL WAS VERY NOTICEABLE IN CABIN AND DETECTED IN COCKPIT ON ARRIVAL. REPLACED OIL PUMP MODULE LUBE PER AMM 49-91-45.

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