# SDR ASAA2023101745719

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 17, 2023
- Submitted: October 19, 2023
- Operation: Air carrier
- Aircraft: [N491AS](https://openairdocs.org/aircraft/N491AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44109
- Aircraft time: 29,569 hours, 9,226 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: 9
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023101745719

## Discrepancy

CONT CAB ZONE TEMP ILLUMINATED ON RECALL. GROUNDED - YES. RELEASED PER MEL 21-21G. FLIGHT DECK PRIMARY TEMP CONTROL INOP. AUTH BY SEAMC MIKE 1659Z.PERFORMED CABIN TEMP CTRL BITE CHECK. REF FIM 21-61 TASK 801. NO FAULTS NOTED. CONT CABIN ZONE TEMP LIGHT EXTINGUISHED & NOT COMING BACK AFTER MASTER CAUTION RECALL . A/C IS RELEASED FROM MEL 21-21G. CREW PLACARD REMOVED. SEAMC PHIL NOTIFIED.

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