# SDR ASAA2017011119358

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 11, 2017
- Submitted: January 18, 2017
- Operation: Air carrier
- Aircraft: [N413AS](https://openairdocs.org/aircraft/N413AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 35205
- Aircraft time: 15,238 hours, 4,928 cycles
- System (JASC): [2162 · Cabin Temperature Indicator](https://openairdocs.org/jasc/2162)
- Part: Indicator
- Part number: 162BL903
- Part serial: 07028646
- Condition: Failed
- Location: Cockpit
- Part time: 33,485 hours, 10,068 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017011119358

## Discrepancy

BOTH FWD AND AFT CABIN TEMP GAUGES FOR SUPPLY DUCT AND PACK READINGS ABNORMALLY LOW, 10 DEG C TEMP CONTROLS OPERATED NORMALLY. GROUNDED - YES. ACCOMPLISHED T/S PER FIM 21-61 TASK 857. NO DEFECTS NOTED. REMOVED AND REPLACED P5-17 TEMPERATURE CONTROL MODULE IAW AMM 21-61-15. REMOVED AND REPLACED CABIN TEMP INDICATOR IAW AMM 21-61-32. REMOVED LIGHT PLATE AND KNOBS AND RE INSTALLED ON NEW TEMP CONTROL MODULE IAW CMM 31-36-99. ALL OPS CHECKS NORMAL. CLEARED MEL 21-17E, 21-17F AND 21-17G.

---
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.