# SDR 9JLA2022121630885

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 2, 2022
- Submitted: December 16, 2022
- Operation: Air carrier
- Aircraft: [N10HC](https://openairdocs.org/aircraft/N10HC), registered now
- Make and model: Emb EMB-135BJ
- Registry model: [EMB EMB-135BJ](https://openairdocs.org/model/embraer-emb-135bj) (OpenAirDocs)
- Aircraft serial: 14501080
- Aircraft time: 5,126 hours, 3,312 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Pressure Gauge
- Part number: 17101300
- Condition: Leaking
- Location: Oxygen System
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9JLA2022121630885

## Discrepancy

THE FLIGHT CREW REPORTED THAT THE OXYGEN PRESSURE DROPPED 370PSI IN A LITTLE OVER AN HOUR. THE CREW OXYGEN INDICATOR WAS FOUND TO BE DEFECTIVE, THE O2 CAPILLARY LINE FROM THE INDICATOR WAS CAPPED AND OPERATIONS WERE CONTINUED PER MEL 35-11-00-2A. THE MAINTENANCE TEAM REPLACED THE CREW OXYGEN GAUGE WITH A NEW UNIT. OPS AND LEAK CHECKS WERE SATISFACTORY. THE AIRCRAFT WAS RETURNED TO SERVICE.

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