# SDR WRNA201412080026

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2014
- Submitted: December 8, 2014
- Operation: Air carrier
- Aircraft: [N901AR](https://openairdocs.org/aircraft/N901AR), registered now
- Make and model: Boeing 747-4R7F
- Registry model: [Boeing 747-4R7F](https://openairdocs.org/model/boeing-747-4r7f) (OpenAirDocs)
- Aircraft serial: 25868
- Aircraft time: 86,372 hours, 16,313 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Warning Message
- Condition: Activated
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/WRNA201412080026

## Discrepancy

DURING CLIMB AT 9000 FT AGL, THERE WAS A CABIN ATTITUDE WARNING WITH AUDIO WARNING.  PERFORMED QRH.  PROCEEDED TO LEVEL OFF AT 14000' DUE TO TERRAIN.   RETURNED TO AIRPORT.  ALL CHECKLIST WERE COMPLETED.  ACCOMPLISHED FIM 21-31, TASK 840, UNTIL STEP 3, PERFORMED CPCS GROUND TEST IAW AMM 21-31-00.  SYSTEM OK.

---
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.