# SDR CA970318026

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 13, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Make and model: Airbus A340-313
- Registry model: [Airbus A340-313](https://openairdocs.org/model/airbus-industrie-a340-313) (OpenAirDocs)
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Trim Air Valve
- Part number: 963A000002
- Condition: Failed
- Location: Nr 1 Pack
- Stage of operation: CR
- Nature of condition: O
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA970318026

## Discrepancy

(CAN) AIRCRAFT OPERATING WITH #1 AIR CONDITIONING PACK ON DEVIATION DUE TO OVERHEAT. UNABLE TO CONTROL CABIN PRESSURIZATION, TRIED TO RESTART #1 PACK, NO SUCCESS. INITIATED EMERGENCY DESCENT TO 10,000 FEET. MAINTENANCE TROUBLE SHOOTING REVEALED TRIM AIR PRESSURE REGULATOR FAILED. REGULATOR REPLACED AND SYSTEM CHECKED SERVICEABLE.

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