# SDR YENA2021060800363

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 15, 2021
- Submitted: June 8, 2021
- Operation: Air carrier
- Aircraft: [N957JB](https://openairdocs.org/aircraft/N957JB), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6809
- Aircraft time: 21,266 hours, 6,950 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Oil System
- Condition: Leaking
- Location: Apu
- Part time: 22,992 hours, 29,896 cycles
- Stage of operation: DE
- How discovered: 9
- Nature of condition: K, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2021060800363

## Discrepancy

FLT 221, BOS-PBI. CREW REPORTED A DIRTY SOCK SMELL ON DESCENT STARTING AROUND 4000FT IN THE CABIN AND EVENTUALLY CAME INTO THE COCKPIT AROUND 3000FT. PACK 1 WAS ALREADY ON MEL. REPEAT ODOR EVENT. ACFT TAKEN OOS IN PBI FOR TS AND ECS DECONTAMINATION. DUE TO OIL LEAKAGE FROM APU FOUND DURING CABIN ODOR T/S STEPS, APU INOP ( APU SYSTEM ); R & R APU IAW AMM 49-11-11-000-004-001, SEE WO 1116000. MDDR 437714 CLEAR, PLACARD REMOVED, MX-4 UPDATED, MCC NOTIFIED."

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.