# SDR SIMA201004901

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 17, 2010
- Submitted: February 18, 2010
- Operation: Air carrier
- Aircraft: N723AE
- Make and model: Emb EMB-135LR
- Registry model: [EMB EMB-135LR](https://openairdocs.org/model/embraer-emb-135lr) (OpenAirDocs)
- Aircraft serial: 145288
- Aircraft time: 21,517 hours, 18,987 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: O-Ring
- Part number: 63200711
- Condition: Failed
- Location: O2 System
- Stage of operation: UK
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA201004901

## Discrepancy

ON FLIGHT 4512 THE CREW REPORTED THAT THE OXYGEN CYLINDER ASSEMBLY SYSTEM WAS LEAKING.  THE CREW ELECTED TO RETURN TO XNA AND LANDED WITHOUT INCIDENT.  THE AIRCRAFT WAS REMOVED FROM SERVICE.  REMOVED AND REPLACED THE CAPILLARY LINE O-RING IAW EMB 135-AMM 35-10-17.  THE LEAK CHECK WAS GOOD.  THE AIRCRAFT WAS RETURNED TO SERVICE.

---
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.