# SDR USAA2013122700003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 26, 2013
- Submitted: December 27, 2013
- Operation: Air carrier
- Aircraft: N256AY
- Make and model: Boeing 767-2B7
- Registry model: [Boeing 767-2B7](https://openairdocs.org/model/boeing-767-2b7) (OpenAirDocs)
- Aircraft serial: 26847
- Aircraft time: 84,510 hours, 15,669 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Control Panel
- Part number: 1305026
- Part serial: 88361
- Condition: Faulty
- Location: Cabin Pressure
- Part time: 49,053 hours, 17,965 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2013122700003

## Discrepancy

FLT 751 ENROUTE,  RECEIVED FWD EQ OVERHEAT MESSAGE FOLLOWED BY UNCONTROLLABLE CABIN AIR PRESSURE.  DECLARED AN EMERGENCY & PERFORMED A RAPID DESCENT TO 10,000 FT.  RETURNED TO DEPARTURE & LANDED WITHOUT FURTHER INCIDENT.  MX REPLACED THE CABIN PRESSURE SELECTOR PANEL, &  PERFORMED A CABIN PRESSURE LEAKAGE CHECK.  SYST OPS CHECKED GOOD.

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