# SDR CA970910016

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 3, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Make and model: Aerosp ATR 42-300
- Registry model: [Aerosp ATR 42-300](https://openairdocs.org/model/aerospatiale-aeritalia-atr-42-300) (OpenAirDocs)
- Engine: Pwa PW120
- Propeller: Hamstd 14SF5
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Switch
- Part number: E0062BS4BA0A
- Condition: Stuck
- Location: Cabin  Control
- Part time: 17,168 hours
- Stage of operation: CL
- Nature of condition: O
- Precautionary procedure: A, D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA970910016

## Discrepancy

(CAN) DURING CLIMB, PRESSURIZATION NOT WORKING. MAINTENANCE FOUND THE OVERBOARD VALVE CONTROL SWITCH FAULTY

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