# SDR ASAA2023111246157

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 12, 2023
- Submitted: November 14, 2023
- Operation: Air carrier
- Aircraft: [N403AS](https://openairdocs.org/aircraft/N403AS), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 41730
- Aircraft time: 41,007 hours, 13,058 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: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023111246157

## Discrepancy

ZONE TEMP DID NOT RESET ON MASTER CAUTION SEVERAL TIMES DURING FLT. TEMP VLIMBED UNLESS CONTROL CABIN SET AF FULL COLD STAYED AT <20DEG MOST OF FLIGHT. GROUNDED - YES. VERIFIED FAULT, REF. L/P #60756322. ACCOMP. PACK ZONE BITE TEST, BOTH CONT. PASS VERIFIY TEST. REF. M/M 21-61-00-700-806-002. SUPPLIED PNUEMATIC PRESSURE WITH APU RAN TEMP CONT FOR 15 MIN NO FAULTS. RF. 36-00-00-860-801 REMOVED ALL 3 CABIN FILTERS CLEANED & REINST. FWD PASS CABIN INST. NEW GRILL FOR TEMP FILTER. REF. M/M 21-61-06-400-801 ACCOMP. TEMP CONT. FOR CONT. CABIN TEST PASS REF, M/M 21-61-00-710-016-002 SEA/MC NOTIFIED CHRIS.

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