# SDR USAAD98044

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 18, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N830US](https://openairdocs.org/aircraft/N830US), registered now
- Make and model: Doug DC-9-82
- Registry model: [Doug DC-9-82](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82) (OpenAirDocs)
- Aircraft serial: 49443
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Duct
- Condition: Failed
- Location: Right
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAAD98044

## Discrepancy

RSW - FLT 932 - EN ROUTE AT 31,000 FEET THE FLOW LIGH TILLUMINATED ON THE PRESSURE CONTROLLER AND THE CABIN STARTED TO CLIMB AT 1000 FT/MIN.  THE CREW SWITCHED TO THE STANDBY PRESSURIZATION SYSTEM BUT THE CABIN CONTINUED TO CLIMB AT THE MAX RATE, THE OUTFLOW VALVE WAS FULLY CLOSED.  THE CAPTAIN INITIATED A DESCENT TO 10,000 FT AND THE FLOW LIGHT WENT OUT.  THE FLIGHT CONTINUED TO ITS DESTINATION.  MAINTENANCE SECURED THE RIGHT RAM AIR DUCT AT THE HEAT EXCHANGER PLENUM.  (M)

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