# SDR ASAA2023041542873

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 15, 2023
- Submitted: April 17, 2023
- Operation: Air carrier
- Aircraft: [N581AS](https://openairdocs.org/aircraft/N581AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35188
- Aircraft time: 55,644 hours, 16,550 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023041542873

## Discrepancy

LEFT ZONE TEMP LIGHT ON W/MC RECALL. GROUNDED - YES. PACK TEMP CNTRL BITE SHOW CONT NO.2 'FLT DECK' TRIM VALVE. RESET CHKS GOOD. NO FAULTS- NO HISTORY 30 DAYS RAN PACKS CYCLED VARIOUS TEMPS -CHKS GOOD NO FAULTS REF: B737-800 FIM 21-62 TASK 903.

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