# SDR ASMF201303008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 21, 2013
- Submitted: March 7, 2013
- Operation: Air carrier
- Aircraft: N520AM
- Make and model: Boeing 737-81Q
- Registry model: [Boeing 737-81Q](https://openairdocs.org/model/boeing-737-81q) (OpenAirDocs)
- Aircraft serial: 29052
- Aircraft time: 37,897 hours, 13,305 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Heat Exchanger
- Condition: Dirty
- Location: Left
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASMF201303008

## Discrepancy

ACFT RETURNED TO PLATFORM DUE TO LT AIR CONDITIONING PACK UNABLE TO CONTROL TEMPERATURE AT MANUAL AND AUTO POSITIONS.   MX PERSONNEL CLEANED THE LT HEAT EXCHANGER IAW MM 21-51-03, TESTED CORRECT.

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