# SDR ASAA2018071625466

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 16, 2018
- Submitted: July 20, 2018
- Operation: Air carrier
- Aircraft: [N431AS](https://openairdocs.org/aircraft/N431AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43255
- Aircraft time: 18,868 hours, 6,230 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Control Panel
- Part number: 6937319312
- Part serial: F08052
- Condition: Failed
- Location: Cockpit
- Part time: 18,861 hours, 6,224 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018071625466

## Discrepancy

WITH APU RUNNING PLACED BLEEDS AND PACKS ON AND FWD CAB ZONE TEMP LIGHT ILLUMINATED. INTERMITTENTLY, MASTER CAUTION EXTINGUISHED LIGHTS. ZONE TEMP ILLUMINATES ON RECALL. GROUNDED - YES. REPLACED P5-10 PANEL REF AMM 21-51-65 OP CHECK NORMAL. FWD CABIN ZONE TEMP LIGHT NO LONGER ILLUMINATES ON RECALL.

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