# SDR 96ZZZM797

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 1, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N950U
- 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: 49230
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Air Distribution
- Condition: Smoke
- Location: Cockpit
- Stage of operation: DE
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZM797

## Discrepancy

DURNG DESCENT, SMOKE FROM AN UNDETERMINED SOURCE APPEARED IN THE COCKPIT AND CABIN.  PERFORMED MD9-21-02 AIR CONDITIONING DUCT OIL CONTAMINATION CHECK, AND MD9-49-04 APU AND ECS PERFORMANCE CHECK, ALL CHECKS NORMAL.

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