# SDR ASAA2015032711137

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 27, 2015
- Submitted: March 30, 2015
- Operation: Air carrier
- Aircraft: [N513AS](https://openairdocs.org/aircraft/N513AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35192
- Aircraft time: 24,782 hours, 7,587 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Module
- Part number: 693732478
- Part serial: D03238
- Condition: Failed
- Location: Cabin Temp
- Part time: 42,564 hours, 17,067 cycles
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2015032711137

## Discrepancy

AFT SUPPLY DUCT AIR TEMP INDICATION FLUCTUATES BETWEEN 20-60 DEG C, WITHOUT MOVING AFT CAB TEMP SELECTOR.  ACTUAL CABIN TEMPS SEEM NORMAL.  ACFT GROUNDED.  VERIFIED P5-17 CAB TEMP CONTROL MODULE CAUSING FLUCTUATION.  R & R P5-17 CAB TEMP CONTROL MODULE REF MM 21-61-15.  OPS CHECK NORMAL.

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