# SDR DXTA2024123001708

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 26, 2024
- Submitted: December 30, 2024
- Operation: Air carrier
- Aircraft: [N590QS](https://openairdocs.org/aircraft/N590QS), registered now
- Make and model: Cessna 560XL
- Registry model: [Cessna 560XL](https://openairdocs.org/model/cessna-560xl) (OpenAirDocs)
- Aircraft serial: 5605738
- Aircraft time: 14,027 hours, 10,699 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Controller
- Part number: 52770116
- Part serial: 3478
- Condition: Faulted
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2024123001708

## Discrepancy

CABIN ALTITUDE, ANNUNCIATOR. AT 12,000 FEET WE GOT A CABIN ALTITUDE LIGHT AND A CABIN ALTITUDE INDICATION OF 10,000 FEET. WE IMMEDIATELY STOPPED THE CLIMB. WE DESCENDED TO 10,000 FEET AT 10,000 FEET. THE CABIN ALTITUDE LIGHT EXTINGUISHED AND WAS SHOWING A CABIN ALTITUDE OF 5000 FEET. DURING THE CLIMB, WE DID NOT EXPERIENCE ANY PHYSIOLOGICAL CHANGES IN OUR EARS ON THE DESCENT FROM 12,000 TO 10,000 I FELT UP POPPING IN MY EARS WHEN WE GOT TO THE CABIN ALTITUDE OF 5000 FEET. AT 5000FT CABIN ALTITUDE READ SEA LEVEL. CORRECTIVE ACTION: REPLACED CABIN AIR CONTROLLER. OPS CHECK GOOD. IAW CE560 AMM 21-30-00.

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