# SDR CALA9800280

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 19, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N525MD](https://openairdocs.org/aircraft/N525MD), registered now
- Make and model: Doug DC-10-30
- Registry model: [Doug DC-10-30](https://openairdocs.org/model/mcdonnell-douglas-dc-10-30) (OpenAirDocs)
- Aircraft serial: 46550
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Prsov
- Part number: 8986264
- Condition: Inoperative
- Location: Nr 2 Engine
- Stage of operation: CL
- Nature of condition: B, M
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA9800280

## Discrepancy

THE NR 2 PACK OVERHEATED WITH SMOKE ENTERING THE CABIN WHILE LEVELING OFF AT FL 280.  THE AIRCRAFT WAS RETURNED TO DUS, WHERE IT LANDED WITHOUT INCIDENT.  TROUBLESHOOTING FOUND THE NR 2 ENGINE PRSOV WOULD NOT SHUT OFF ELECTRICALLY, CAUSING THE NR 2 PACK TO OVERTEMP AND TRIP.  THE NR 2 PRSOV WAS LOCKED OUT MANUALLY AND THE NR 2 PNEUMATIC SYSTEM AND NR 2 PACK WERE PLACARDED INOPERATIVE.  THE ENGINES WERE RUN AND ALL OPERATION CHECKED GOOD.

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