# SDR SA05034

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 24, 2005
- Submitted: March 28, 2005
- Operation: Air carrier
- Aircraft: [N181UW](https://openairdocs.org/aircraft/N181UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1531
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Switch
- Condition: Leaking
- Location: Apu
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SA05034

## Discrepancy

EN ROUTE, PHL TO LAX.  AFTER TAKEOFF, AND FOR SEVERAL THOUSAND FEET, A STRONG OILY ODOR WAS NOTICED COMING FROM THE AIR CONDITIONING SYSTEM.  ODOR DISSIPATED.  FLIGHT CONTINUED TO LAX AND LANDED WITHOUT FURTHER INCIDENT.  MAINTENANCE FOUND OIL LEAK IN APU.  MAINTENANCE REPLACED THE APU.  OPERATIONALLY AND LEAK CHECKS OK.  THE SHOP FINDINGS INDICATED THAT THE LOW OIL PRESSURE SWITCH HAD AN INTERNAL LEAK.  THE SWITCH WAS REPLACED.  (K)

---
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.