# SDR ASAA2018122647548

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 24, 2018
- Submitted: December 27, 2018
- Operation: Air carrier
- Aircraft: [N408AS](https://openairdocs.org/aircraft/N408AS), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 41732
- Aircraft time: 24,001 hours, 7,838 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning Light
- Condition: False Activation
- Location: Lt A/C Pack
- Stage of operation: DE
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018122647548

## Discrepancy

LEFT PACK ILLUM DURING RECALL CK ON DESCENT. GROUNDED - YES. PERFORMED T/S PER B737-900 FIM 21-62 TASK 801. DURING BITE, LEFT PACK RAM AIR ACT SHOWED A FAULT IN PREVIOUS LEG. CLEARED FAULT PER BITE PROCEDURE, LEFT PACK LIGHT NO LONGER ILLUMINATES ON RECALL. LEFT PACK CKS GOOD FOR SERVICE.

---
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.