# SDR SIMA20141206002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 2014
- Submitted: December 8, 2014
- Operation: Air carrier
- Aircraft: [N503AE](https://openairdocs.org/aircraft/N503AE), registered now
- Make and model: Cndair CL6002C10
- Aircraft serial: 10021
- Aircraft time: 30,832 hours, 22,137 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Valve
- Condition: Not Closed
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20141206002

## Discrepancy

RETURNED AFTER TAKEOFF.   ACFT DEPRESSURIZED AS LIFTED AFT.  UPON FURTHER INSPECTION FOUND GND VLV TO BE NOT FULLY CLOSED IAW MEL 21-6.  CLOSED GND VLV & VERIFIED.  PERFORMED PRESSURIZATION CHECK IAW 21-31-00.  OPERATION CHECKED GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.