# SDR AMCR20180712004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 11, 2018
- Submitted: July 12, 2018
- Operation: General aviation
- Aircraft: [N606MC](https://openairdocs.org/aircraft/N606MC), registered now
- Make and model: Cessna 525C
- Registry model: [Cessna 525C](https://openairdocs.org/model/cessna-525c) (OpenAirDocs)
- Aircraft serial: 525C0121
- Aircraft time: 1,595 hours, 1,303 cycles
- System (JASC): [3500 · Oxygen System](https://openairdocs.org/jasc/3500)
- Part: Tee Fitting
- Part number: AS4857D01
- Part serial: NSN
- Condition: Cracked
- Location: Oxygen System
- Part time: 1,595 hours
- 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/AMCR20180712004

## Discrepancy

THE T-FITTING TO THE OXYGEN SYSTEM PRESSURE GAUGE AND TRANSDUCER HAS A CRACK ON ONE END. THE CRACK WAS FOUND VISUALLY AFTER IT WAS DETECTED ON TWO OTHER CJ4 AIRCRAFT.

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