# SDR ASAA2017120622798

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 2017
- Submitted: December 7, 2017
- Operation: Air carrier
- Aircraft: [N486AS](https://openairdocs.org/aircraft/N486AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44107
- Aircraft time: 8,943 hours, 2,996 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Knob
- Condition: Loose
- Location: Control Module
- Part time: 8,935 hours, 2,993 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017120622798

## Discrepancy

TEMP INDICATION SELECTOR ON TEMP CONTROL MODULE IS LOOSE. GROUNDED - YES. UNABLE TO SECURE SWITCH. REMOVED AND REPLACED TEMP CONTROL MODULE REF B737-900 AMM 21-61-15, OPS CHECK NORMAL.

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