# SDR ASAA2023103045913

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 30, 2023
- Submitted: October 31, 2023
- Operation: Air carrier
- Aircraft: [N588AS](https://openairdocs.org/aircraft/N588AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35685
- Aircraft time: 56,190 hours, 16,792 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Module
- Part number: 693732478
- Part serial: D01769
- Condition: Malfunctioned
- Location: Cabin Temp
- Part time: 104,126 hours, 44,288 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023103045913

## Discrepancy

FLIGHT DECK "ZONE TEMP" LT FALLS OUT ON DEPRESS. LH LIGHT. GROUNDED - YES. FOUND MULTIPLE "ZONE TEMP" LIGHT ASSEMBLIES LOOSE. REMOVED AND REPLACED TEMP CONTROL MODULE. OPS NORMAL. REF AMM 21-61-15.

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