# SDR CA971216002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 13, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Make and model: Bag BAE146200A
- Engine: Lyc ALF502R5
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Heat Exchanger
- Part number: 4754C
- Condition: Dirty
- Location: Nr 2 Pack
- Part time: 20,351 hours
- Stage of operation: TX
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA971216002

## Discrepancy

(CAN) NR 2 PACK WOULD NOT COME ON-LINE WITH APU AIR.  ON GROUND RUN WITH ENGINES RUNNING NR 2 PACK, IT CAUSED SMOKE IN THE CABIN AND DUCT TEMPERATURE VERY HOT.  PRIMARY HEAT EXCHANGER AND SECONDARY EXCHANGER P/N 4756C000 REPLACED.

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