# SDR ASAA2023041342871

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 13, 2023
- Submitted: April 17, 2023
- Operation: Air carrier
- Aircraft: [N486AS](https://openairdocs.org/aircraft/N486AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44107
- Aircraft time: 28,149 hours, 8,837 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/ASAA2023041342871

## Discrepancy

CONT CAB ZONE TEMP RESETS MASTER RECALL. GROUNDED - YES. PER B737-900 FIM 21-62 TASK 801 + 842 PACK TEMP CONTROL BITE #2 CTRL HAD FLT DECK TRIM VALVE. VERIFIY PASSED. FAULT CLEARED. OPERATED PACKS. CONT CAB TEMP OPERATED NORMALLY.NO HISTORY 30 DAY.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.