# SDR 39NR20130808016

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 2013
- Submitted: August 8, 2013
- Operation: General aviation
- Filed by: [North State Aviation Holding, LLC, repair station 39NR184D](https://openairdocs.org/faa-repair-station/39NR184D/north-state-aviation-holding-llc.md) (OpenAirDocs)
- Aircraft: [N33294](https://openairdocs.org/aircraft/N33294), registered now
- Make and model: Boeing 737824
- Aircraft serial: 3400
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Heat Exchanger
- Part number: 1828203
- Part serial: 6742
- Condition: Cracked
- Location: Rt Pack Bay
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/39NR20130808016

## Discrepancy

DURING NITROGEN GENERATION INSTALLATION FOUND 8 INCH CRACK IN TOP OF RT SECONDARY HEAT EXCHANGER.  REPLACED HEAT EXCHANGER IAW AMM 21-51-03.

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