# SDR ASAA2016121219018

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 12, 2016
- Submitted: December 14, 2016
- Operation: Air carrier
- Aircraft: [N512AS](https://openairdocs.org/aircraft/N512AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 39043
- Aircraft time: 32,173 hours, 9,785 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Knob
- Condition: Loose
- Location: Temp Selector
- 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/ASAA2016121219018

## Discrepancy

AIR TEMPERATURE SOURCE SELECTOR KNOB ROTATES WITHOUT CHANGING SOURCE. GROUNDED - YES. REMOVED TEMP CONTROL MODULE, TIGHTENED TEMP SELECT KNOB AND REINSTALLED MODULE PER B737-800 AMM 21-61-15, OPS CHECK GOOD, REF B737-800 AMM 21-61-00-700-807-002.

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