# SDR CWQR20130131002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 31, 2012
- Submitted: February 5, 2013
- Operation: General aviation
- Aircraft: [N577QS](https://openairdocs.org/aircraft/N577QS), registered now
- Make and model: Cessna 560XL
- Registry model: [Cessna 560XL](https://openairdocs.org/model/cessna-560xl) (OpenAirDocs)
- Aircraft serial: 5605735
- Aircraft time: 4,646 hours
- System (JASC): [3520 · Passenger Oxygen System](https://openairdocs.org/jasc/3520)
- Part: Pressure Switch
- Part number: P24032
- Part serial: 1530
- Condition: Out Of Tolerance
- Location: Oxygen Masks
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CWQR20130131002

## Discrepancy

DURING A SCHEDULED INSPECTION,  PERFORMED TASK 35-01-00-710. THIS TASK CHECKS THE ALITUDE IN WHICH THE PASSENGER MASKS WOULD DROP.   FOUND THE INSTALLED PRESSURE SWITCH OUT OF TOLERANCE. A NEW SWITCH WAS INSTALLED, THIS SWITCH WAS OUT OF TOLERANCE.  THIS UNIT WAS REJECTED AND RETURNED TO MFG. THIS CONDITION HAS BEEN REPORTED TO MFG SDR 647960.

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