# SDR MYWA120000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 3, 2012
- Submitted: January 5, 2012
- Operation: Air carrier
- Aircraft: [N752MA](https://openairdocs.org/aircraft/N752MA), registered now
- Make and model: Boeing 737-48E
- Registry model: [Boeing 737-48E](https://openairdocs.org/model/boeing-737-48e) (OpenAirDocs)
- Aircraft serial: 28198
- Aircraft time: 25,904 hours, 24,629 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Unknown
- Condition: Malfunctioned
- Location: Cabin Temp
- Stage of operation: NR
- 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/MYWA120000

## Discrepancy

ETOPS SIGNIFICANT SYSTEM: "CAB CONT" TEMP SELECTOR MAX HOT AND COCKPIT TEMP NEVER GOT ABOVE 11 C.  ACCOMPLISHED BITE TEST ON PACK/ZONE TEMP CONTROLLER IAW B737-400 M/M 21-63-83 OPS CHECK NORMAL NO FAULTS NOTED.  ACCOMPLISHED SYSTEM TEST OF THE TEMPERATURE CONTROL SYSTEM IAW B737-400 M/M 21-61-00 OPS CHECK NORMAL.

---
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.