# SDR UPS07648824

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 4, 2007
- Submitted: January 10, 2007
- Operation: Air carrier
- Aircraft: [N309UP](https://openairdocs.org/aircraft/N309UP), registered now
- Make and model: Boeing 767-34AF
- Registry model: [Boeing 767-34AF](https://openairdocs.org/model/boeing-767-34af) (OpenAirDocs)
- Aircraft serial: 27740
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Condition: Malfunctioned
- Location: Cabin Pressure
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS07648824

## Discrepancy

UNABLE TO PRESSURIZE AIRCRAFT.  FOUND NO POWER ON BOTH CONTROLLERS.  RE-ESTABLISH AIRFLOW IN E/E CABIN PRESS CONTROLLERS.  FOUND "AC POWER LOSS" AND "NO AIR FLOW" BITE FAULTS ON BOTH CONTROLLERS.  C/O VERIFICATION AGAIN AND FOUND BOTH NO FAULTS.  RESET BOTH CONTROLLERS.  SYSTEM OK, REF FIM 21-31-00 FIG 103.

---
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.