# SDR ASAA2017102322289

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 23, 2017
- Submitted: October 24, 2017
- Operation: Air carrier
- Aircraft: [N403AS](https://openairdocs.org/aircraft/N403AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41730
- Aircraft time: 19,939 hours, 6,543 cycles
- System (JASC): [2197 · Air Conditioning System Wiring](https://openairdocs.org/jasc/2197)
- Part: Connector
- Condition: Disconnected
- Location: Recirc Fan
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017102322289

## Discrepancy

FORWARD CABIN TEMP VERY OVERREACTIVE TO SMALL INPUTS ON FWD CABIN SWITCH. RANGE FROM 10-50. FOLLOWED QRH. TURNED TRIM AIR OFF AND TEMP STABILIZED.  ACFT GROUNDED.  FOUND THE FORWARD CABIN SENSOR RECIRCULATING FAN INOPERATIVE.  FOUND CONNECTOR DISCONNECTED.  SECURED THE CONNECTOR & OPS CHECKED NORMAL IAW FIM 21-61, TASK 864.

---
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.