# SDR 9JLA2018012612790

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 26, 2017
- Submitted: January 26, 2018
- Operation: Air carrier
- Aircraft: N940JM
- Make and model: Beech 400A
- Registry model: [Beech 400A](https://openairdocs.org/model/hawker-beechcraft-400a) (OpenAirDocs)
- Aircraft serial: RK492
- Aircraft time: 4,282 hours, 3,896 cycles
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Line
- Part number: 45AS95002033
- Condition: Chafed
- Location: Oxygen System
- 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/9JLA2018012612790

## Discrepancy

DURING THE POST FLIGHT CHECKS,  THE FLIGHT CREW REPORTED A HISSING NOISE COMING FROM UNDER THE INSTRUMENT PANEL, CORRESPONDING TO THE OXYGEN GAUGE GOING DOWN.  DISCOVERED THAT THE OXYGEN CAPILLARY LINE HAD BEEN CHAFED BY A REMOVABLE INSPECTION PANEL. A NEW LINE WAS INSTALLED AND POSITIONED TO CLEAR PANEL.

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