# SDR 2025FA0000681

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 6, 2025
- Submitted: October 6, 2025
- Operation: General aviation
- Make and model: Beech B36TC
- Registry model: [Beech B36TC](https://openairdocs.org/model/beech-b36tc) (OpenAirDocs)
- Aircraft serial: EA694
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Bottle
- Part number: P608427
- Condition: Leaking
- Location: Zone 500
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2025FA0000681

## Discrepancy

TIMED OUT OXYGEN BOTTLE WITH SERVICEABLE OXYGEN REGULATOR WERE SENT TO AEROSPACE TURBINE ROTABLES FAA CRS NV2R045L UNDER WO: WO218149.  THE SERVICEABLE REGULATOR WAS REMOVED AND INSTALLED ON A NEW BOTTLE.  WHEN WE RECEIVED THE "INSPECTED/TESTED" BOTTLE AND REGULATOR ASSEMBLY IT WOULD START LEAKING ABOVE 100 PSI.  THE ASSEMBLY WAS SENT BACK TO ATR WITH NOTED DEFECT, A FITTING WAS REPLACED AND AGAIN "INSPECTED/TESTED".  SECOND LEAK CHECK FAILED AGAIN.  BOTTLE WAS SENT BACK TO ATR AND THEY HAVE NOW DISCOVERED THE LEAK.  OBVIOUSLY THEIR QC HAS GLARING PROBLEMS.  ATR IS NOT ACTUALLY INSPECTING/TESTING AT LEAST THIS OXYGEN BOTTLE ASSEMBLY.

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