# SDR 02FDEA00498

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 2002
- Submitted: July 23, 2002
- Operation: Air carrier
- Aircraft: N448FE
- Make and model: Airbus A310
- Registry model: [Airbus A310](https://openairdocs.org/model/airbus-a310) (OpenAirDocs)
- Aircraft serial: 260
- Aircraft time: 34,007 hours, 24,493 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Controller
- Part number: 82010B040901
- Part serial: UNK
- Location: Zone 300
- Stage of operation: CL
- How discovered: O
- Nature of condition: J, O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/02FDEA00498

## Discrepancy

CLIMBING OUT OF SEA, ECAM ALERT - "EXCESS CAB ALT". DONNED O2 MASKS AND TRIED TO   TROUBLESHOOT PROBLEM. SWAPPED REGULATORS FOR PRESS. TRIED MANUALLY PRESS   AIRPLANE. NO SUCCESS. RETURNED TO SEA FOR LANDING.    UPON BLOCK-IN, COULD NOT TEST EITHER SYS 1 OR 2.  FOUND #1 SYS BITE UNIT ROTARY   SWITCH OUT OF "NORM FLT" POSITION. RESET TO NORMAL POSITION AND #1 UNIT TESTS OK   PER A310 MM 21-31-00-5-01. OK FOR SERVICE.

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