# SDR 98ZZZM887

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 24, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N852CA](https://openairdocs.org/aircraft/N852CA), registered now
- Make and model: Beech 1900D
- Registry model: [Beech 1900D](https://openairdocs.org/model/beech-1900d) (OpenAirDocs)
- Aircraft serial: UE55
- System (JASC): [2161 · Cabin Temperature Controller](https://openairdocs.org/jasc/2161)
- Part: Temp Controller
- Part number: HYLZ51071
- Condition: Failed
- Location: Cabin
- Part time: 62,163 hours
- Stage of operation: DE
- Nature of condition: B
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZM887

## Discrepancy

DURING DESCENT AT APPROXIMATELY 14,000 FT, A SUDDEN AND STRONG BURNING SMELL WITH A HAZE OF SMOKE FILLED COCKPIT.  INSPECTION OF AIRCRAFT FOUND CIRCUIT CARD FAILURE IN CABIN TEMPERATURE CONTROLLER IN CABIN CEILING.  UNIT WAS REPLACED AND SYSTEM CHECKED SATISFACTORY IAW CHAPTER 21.  (M)

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